A geological formation of dolomite located near Twyfelfontein, Namibia, Africa

Petrified Forest National Park, Blue Mesa, Blue Mesa Trail, sedimentary layers of bluish bentonite clay

Tilted layers showing bedding planes in strata of sedimentary rock in coastal cliff at Odeceixe, Algarve, Portugal, Europe

Sedimentary layers of bluish bentonite clay, Blue Mesa Trail, Blue Mesa, Petrified Forest National Park, Arizona, United States of America, North America

Evergreens, red maples, and red rock on the Emerald Pools Trail, Zion National Park, Utah, United States of America, North America

A geological formation located near Twyfelfontein, Namibia, Africa

Rock formations and dead juniper, Grand Staircase-Escalante National Monument, Utah, United States of America, North America

Sedimentary layers of bluish bentonite clay, The Tepees, Petrified Forest National Park, Arizona, United States of America, North America

Sedimentary layers of bluish bentonite clay with petrified wood, Blue Mesa Trail, Blue Mesa, Petrified Forest National Park, Arizona, United States of America, North America

Eroded sedimentary sandstone near the Great Crack, Summit of Mount Kukenaam (Kukenan) (Cuguenan), Estado Bolivar, Venezuela, South America

View of sedimentary layers from Cape Hay, Bylot Island, Nunavut, Canada, North America

Rock fin, Carson National Forest, New Mexico, United States of America, North America

Rocks in the badlands at sunrise, Bisti Wilderness, New Mexico, United States of America, North America

Erosion of sedimentary layers of sandstone near the Great Crack, Summit of Mount Kukenaam (Kukenan) (Cuguenan), Estado Bolivar, Venezuela, South America

View of sedimentary layers from Cape Hay, Bylot Island, Nunavut, Canada, North America

Hickman Bridge, Capitol Reef National Park, Utah, United States of America, North America

Red rock cliffs and badlands, Capitol Reef National Park, Utah, United States of America, North America

Rock in the badlands, Capitol Reef National Park, Utah, United States of America, North America

Rocks at the Egg Factory at dusk, Bisti Wilderness, New Mexico, United States of America, North America

Hickman Bridge, Capitol Reef National Park, Utah, United States of America, North America

Scenic view of hoodoos and rock formations, Rim Trail near Sunrise Point, Bryce Canyon National Park, Utah, United States of America, North America

Examples of Tafoni created in the Warton Sandstone layer, King George River, Kimberley, Western Australia, Australia, Pacific

Rainbow over the Dades Gorges, Morocco, North Africa, Africa

East slopes of Haystack Mesa in Petrified Forest National Park, Arizona, United States of America, North America

The Pancake Rocks, an unusual formation of limestone layered like sedimentary rock and eroded by water and wind, Punakaiki, West Coast, South Island, New Zealand, Pacific

170 million year old footprints of large plant-eating Jurassic Sauropod dinosaurs, on the tidal rock platform below Duntulm Castle on the west coast of the Trotternish Peninsula, Duntulm, Skye, Inner Hebrides, Scotland, United Kingdom, Europe

Anvil Hill west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America

Folded sedimentary rocks in cliffs at Welcombe Mouth, on the Atlantic coast; Hartland, north Devon, England, United Kingdom, Europe

Pieces of petrified wood on hills overlooking Dead Wash, Petrified Forest National Park, Arizona, United States of America

White Stupa sedimentary rock formations at dusk, Ulziit, Middle Gobi province, Mongolia, Central Asia, Asia

The intertidal zone of the Quantock Coast, West Somerset, contains an abundance of geology and wildlife. It is a Site of Special Scientific Interest (SSSI) and is of international geological importance.

Close up view of hyaloclastite at Brown Bluff, a tuya, sub glacial volcano, on the east side of the Antarctic Peninsula, Antarctica, Polar Regions

Hoodoo filled cliffs on the north side of Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

The intertidal zone of the Quantock Coast, West Somerset, contains an abundance of geology and wildlife. It is a Site of Special Scientific Interest (SSSI) and is of international geological importance.

A ridge of gray bentonite viewed from a nearby flat top mesa on the south end of Petrified Forest National Park, Arizona, United States of America, North America

White Stupa sedimentary rock formations, Ulziit, Middle Gobi province, Mongolia, Central Asia, Asia

White Stupa sedimentary rock formations, Ulziit, Middle Gobi province, Mongolia, Central Asia, Asia

A purple canyon with a dry creek in between hills of bentonite in Petrified Forest National Park, Arizona, United States of America, North America

Dades Gorges scenery, Morocco, North Africa, Africa

A small hill of gray bentonite clay that appears to be melting into the purple bentonite of Hamilili Valley on the south end of Petrified Forest National Park, Arizona, United States of America, North America

A pointed peak of bentonite in Hamilili Valley on the south end of Petrified Forest National Park, Arizona, United States of America, North America

Rainbow across the Dades Gorges, Morocco, North Africa, Africa

Caleta Negra (Black Bay) a popular boat trip and walk with its distinctive sedimentary and lava strata, Ajuy, Fuerteventura, Spain, Atlantic, Europe

A dusk view of a rock arch formed from layers of sedimentary rocks, at Hartland Quay, on the Atlantic coast of Devon, England, United Kingdom, Europe

Dades Gorges scenery, Morocco, North Africa, Africa

A sunlit view of a rock arch, formed from multiple layers of red sedimentary rock, at Hartland Quay, on the Atlantic coast of Devon, England, United Kingdom, Europe

A sedimentary Pipe, Angel's Palace trail, Kodachrome Basin State Park, Grand Staircase-Escalante National Monument, Kane County, Utah, United States of America, North America

Sedimentary rocks, blue lias, shale-limestone sequences, Lyme Regis, Jurassic coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe

Sedimentary rocks, clay, colour banded by iron oxides, horizontal Triassic Chinle Clay, Blue Mesa, Painted Desert, Arizona, United States of America, North America

Sedimentary rocks as part of sea defences in County Wexford, Ireland

Folded limestone and shale, Jurassic period, Stair Hole, Lulworth, Dorset, England, United Kingdom, Europe

Folded layers of Jurassic sedimentary limestone and marl rocks in the cliffs at Vega beach, Ribadesella, Asturias, Spain, Europe

Sedimentary rocks as part of sea defences in County Wexford, Ireland

Folded layers of Jurassic sedimentary limestone and marl rocks in the cliffs at Vega beach, Ribadesella, Asturias, Spain, Europe

View of sedimentary layers from Cape Hay, Bylot Island, Nunavut, Canada, North America

Royal tomb, Petra, UNESCO World Heritage Site, Jordan, Middle East

Detail of red cliff, Dzhety-Oguz, near Kara-Kol, Kyrgyzstan, Central Asia, Asia

Sedimentary rocks as part of sea defences in County Wexford, Ireland

Cowpers Cross, an ancient stone cross standing close to the old Roman road that crosses Ilkley moor, West Yorkshire, England, United Kingdom, Europe

Sea stacks and sea arch on the North East coast at Whitburn, between Newcastle and Sunderland, Tyne and Wear, England, United Kingdom, Europe

Sea stacks and sea arch on the North East coast at Whitburn, between Newcastle and Sunderland, Tyne and Wear, England, United Kingdom, Europe

Sea stacks and sea arch on the North East coast at Whitburn, between Newcastle and Sunderland, Tyne and Wear, England, United Kingdom, Europe

Sea stacks and sea arch seen from a sea cave on the North East coast at Whitburn, between Newcastle and Sunderland, Tyne and Wear, England, United Kingdom, Europe

A boulder of millstone grit on Ilkley moor with a perfect circular hole probably formed by a large inclusion weathered out of the bedrock, West Yorkshire, England, United Kingdom, Europe

Sea stacks and sea arch seen from a sea cave on the North East coast at Whitburn, between Newcastle and Sunderland, Tyne and Wear, England, United Kingdom, Europe

Sea stacks and sea arch on the North East coast at Whitburn, between Newcastle and Sunderland, Tyne and Wear, England, United Kingdom, Europe

The Thimble Stones, millstone grit boulders near the summit of Ilkley Moor, West Yorkshire, England, United Kingdom, Europe

Sea stacks and sea arch on the North East coast at Whitburn, between Newcastle and Sunderland, Tyne and Wear, England, United Kingdom, Europe

A boulder of millstone grit on Ilkley moor with a perfect circular hole probably formed by a large inclusion weathered out of the bedrock, West Yorkshire, England, United Kingdom, Europe

A boulder of millstone grit on Ilkley moor with a perfect circular hole probably formed by a large inclusion weathered out of the bedrock, West Yorkshire, England, United Kingdom, Europe

Cowpers Cross, an ancient stone cross standing close to the old Roman road that crosses Ilkley moor, West Yorkshire, England, United Kingdom, Europe

Cowpers Cross, an ancient stone cross standing close to the old Roman road that crosses Ilkley moor, West Yorkshire, England, United Kingdom, Europe

The Thimble Stones, millstone grit boulders near the summit of Ilkley Moor, West Yorkshire, England, United Kingdom, Europe

Rock formations on mountain side. Longyearbyen, Svalbard, Norway

Nash Point, Heritage Coast, Vale of Glamorgan, South Wales, UK (rr)

Nash Point, Heritage Coast, Vale of Glamorgan, South Wales

Deer Park, Martins Haven, Pembrokeshire, Wales, UK, Europe

Black Church Rock near Clovelly in Devon, England, United Kingdom, Europe

Nash Point, Heritage Coast, Vale of Glamorgan, South Wales

Torridonian Sandstone boulder at dawn, Torridon, Wester Ross, Scotland

Rock formations on mountain side. Longyearbyen, Svalbard, Norway

Deer Park, Martins Haven, Pembrokeshire, Wales, UK, Europe

Steps cut into a Sandstone bluff in Sydney, New South Wales, Australia, Pacific

Rock arch, Marloes Sands, Pembrokeshire, Wales, UK, Europe

Montserrat is a mountain near Barcelona, in Catalonia. It is the site of a Benedictine abbey, Santa Maria de Montserrat, which hosts the Virgin of Montserrat sanctuary. Montserrat is a multi-peaked mountain range near Barcelona, in Catalonia, Spain. It is part of the Catalan Pre-Coastal Range. The main peaks are Sant Jeroni (1,236 m), Montgrós (1,120 m) and Miranda de les Agulles (903 m). It is well known as the site of the Benedictine abbey, Santa Maria de Montserrat, which hosts the Virgin of Montserrat sanctuary. Montserrat literally means "saw (serrated, like the common handsaw) mountain" in Catalan. It describes its peculiar aspect with multitude of rock formations which are visible from a great distance. The mountain is composed of strikingly pink conglomerate, a form of sedimentary rock. Montserrat was designated as a National Park in 1987. On this mountain we will have access to the Monastery of Montserrat which houses the virgin that gives its name to the monastery, although it is also known as La Moreneta

Travertine terrace formations at Pamukkale, tourists and hot-air balloon

Travertine terrace formations at Pamukkale, tourists and hot-air balloon

Travertine terrace formations at Pamukkale and tourists

Travertine terrace formations at Pamukkale and tourists

Sedimentary rock structure, Wadi Mujib, Jordan, Middle East

Aerial view, sinter steps, sinter terraces, lime sinter terraces, Egerszalok, Egerszalok, Eger, Heves, Hungary, Europe

Heligoland - a view over the red sedimentary rock - Schleswig-Holstein, Germany, Europe.

Mound and Jupiter Spring Terrace, Main Terrace, limestone sinter terraces, geysers, hot springs, Mammoth Hot Springs Terraces in Yellowstone National Park, Wyoming, United States of America, USA

Minerva Spring Terrace, Lower Terraces, limestone sinter terraces, geysers, hot springs, Mammoth Hot Springs Terraces in Yellowstone National Park, Wyoming, United States of America, USA

First Hoodoo, also known as Toadstool Hoodoo or Lucky Luke, toadstool hoodoos, rimrocks, Grand Staircase Escalante National Monument, GSENM, Utah, United States of America, USA

View of Bryce Amphitheater from Inspiration Point, coloured rock formations, fairy chimneys, morning light, Bryce Canyon National Park, Utah, USA, North America

Travertine terrace formations, UNESCO World Heritage Site, Pamukkale, Denizli Province, Aegean Region, Turkey, Asia

Riesenburg cave, natural karst cave ruin of Frankendolomite, geotope, natural monument, in the back climber at rock face, near Engelhardsberg, district of Markt Wiesenttal, Upper Franconia, Franconian Switzerland, Franconia, Bavaria, Germany, Europe

Chromatic Spring in Upper Geyser Basin, Yellowstone National Park, Wyoming, USA

Sinter terraces with calcareous tuff deposits, hot springs, colorful mineral deposits, Palette Springs, Lower Terraces, Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA, North America