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Historic traditional water wheel irrigation system, Betancuria, Fuerteventura, Canary Islands, Spain, Atlantic, Europe

Petrified logs from the late Triassic period, 225 million years ago, Long Logs Trail, Petrified Forest National Park, Arizona, United States of America, North America

Petrified logs from the late Triassic period, 225 million years ago, Long Logs Trail, Petrified Forest National Park, Arizona, United States of America, North America

Petrified logs from the late Triassic period, 225 million years ago, Long Logs Trail, Petrified Forest National Park, Arizona, United States of America, North America

Petrified logs from the late Triassic period, 225 million years ago, Long Logs Trail, Petrified Forest National Park, Arizona, United States of America, North America

Petrified logs from the late Triassic period, 225 million years ago, Long Logs Trail, Petrified Forest National Park, Arizona, United States of America, North America

Sunrise on Hadrian's Wall National Trail in winter, looking to Housesteads Fort, Hadrian's Wall, UNESCO World Heritage Site, Northumberland, England, United Kingdom, Europe

Sunrise and Hadrian's Wall National Trail in winter, looking to Housesteads Fort, Hadrian's Wall, UNESCO World Heritage Site, Northumberland, England, United Kingdom, Europe

Sunrise and Hadrian's Wall National Trail in winter, looking to Housesteads Fort, Hadrian's Wall, UNESCO World Heritage Site, Northumberland, England, United Kingdom, Europe

Neapolis Archaeological Park, UNESCO World Heritage Site, Syracuse, Sicily, Italy, Mediterranean, Europe

Scenic view of an ancient stone wall stretching across a grassy landscape under a blue sky with wispy clouds at Sycamore Gap, Northumberland, England, United Kingdom, Europe

The remains of a rock wall built by ancient Indians along the Stone to Steel Trail that runs between the historic Stone Dam and Bainbridge Steel Dam near Ash Fork Arizona.

The remains of a rock wall built by ancient Indians along the Stone to Steel Trail that runs between the historic Stone Dam and Bainbridge Steel Dam near Ash Fork Arizona.

The crumbling walls of ancient Indian Ruins along the south rim of Rattlesnake Canyon near the historic Chavez Trail, Arizona, United States of America, North America

Phutuq K'usi (Putucusi) mountain by Urubamba River seen from the trail to Machu Picchu, Sacred Valley, Peru, South America

Mountains in the Andes near Rainbow Mountain, Pitumarca District, Cusco (Cuzco) Region, Peru, South America, South America

The Ancient city view with strange speared rocks, Swords Valley, Cappadocia, Turkey, Asia Minor, Asia

The Red Mountains rising behind the petrified sand dunes at Snow Canyon State Park, Southern Utah, United States of America, North America. Many famous films were made in the park which forms part of the Red Cliffs Desert Reserve.

Petrified sand dunes, White Canyon State Park, Red Cliffs Desert Reserve near St. George, Utah, United States of America

Petrified sand dunes, White Canyon State Park, Red Cliffs Desert Reserve near St. George, Utah, United States of America

Petrified sand dunes, White Canyon State Park, Red Cliffs Desert Reserve near St. George, Utah, United States of America

Petrified sand dunes, White Canyon State Park, Red Cliffs Desert Reserve near St. George, Utah, United States of America

Hikers on ancient path used by villagers to cross the island North to South, on the heights of Santana, Madeira island, Atlantic Ocean, Portugal

Hiker on ancient path used by villagers to cross the island North to South, on the heights of Santana, Madeira island, Atlantic Ocean, Portugal

Pluri-centenarian laurel trees around Fanal, Paul da Serra plateau, Madeira island, Atlantic Ocean, Portugal

The interior of the Supai Tunnel along the North Kaibab Trail, Grand Canyon North Rim, UNESCO, Arizona, United States of America

Ardvreck Castle and Stac Pollaidh, Loch Assynt, Ross and Cromarty, Highlands, Scotland, United Kingdom

Sandstone rock formation in the Dixie National Forest, Utah, USA. The National Forest was created in 1906.

Valley next to Rainbow Mountain, Uchullujllo, Pitumarca District, Canchis Province, Cuzco Region, Peru, South America

Trail at archaeological site of Pisaq (Pisac), UNESCO World Heritage Site, Pisaq, Sacred Valley, Urubamba Province, Cusco (Cuzco) Region, Peru, South America

Bronze Bell of Nuona Pagoda Temple, aka Small Heavenly Pool Temple, a Tibetan Temple in Lushan (Mount Lu), Jiujiang City, Jiangxi, China. Lushan is a UNESCO World Heritage site, it is one of China's most famous mountains known for its natural beauty.

Ka'na Nah, Tall House Temple, San Gervasio Archaeological Site, Cozumel Island, Quintana Roo State, Mexico

Templo Nohoch Nah, Big House Temple, San Gervasio Archaeological Site, Cozumel Island, Quintana Roo State, Mexico

Dragon Head Cliff, Lushan (Mount Lu), Jiujiang City, Jiangxi, China. Lushan is a UNESCO World Heritage site, it is one of China's most famous mountains known for its natural beauty.

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

An island of rock in an unnamed canyon that leads to Dead Wash in Petrified Forest National Park, Arizona, United States of America

Small Mosque beside wadi near Al Hajir, on track on western slope of Djebel Ahkdar below Sharaf al Alamayn Pass, 2036m, Oman, Arabian Peninsula

Jabal Ikmah Site, world's largest concentration of well-preserved Dadanitic inscriptions, 1st millennium BCE, AlUla, Medina Province, Saudi Arabia

Acrocorinth historic castle on top of the mountain with Euphorbia characias (Mediterranean spurge) yellow flowers, Greece

Meteora, ancient holy Monastery of Rousanos Saint Barbara, Varlaam, Saint Nicholas Anapafsas and Great Meteoron, UNESCO, Kalabaka, Greece

Extraordinary sandstone rock structure called Dancing Rocks in the Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia

The remains of a Guard Shack above the Johnson Canyon Railroad Tunnel, Kaibab National Forest of Arizona, USA

The north entrance of the historic Johnson Canyon Railroad Tunnel, Kaibab National Forest of Arizona, USA

A narrow and overgrown section of the abandoned Johnson Canyon Railroad in the Kaibab National Forest of Arizona, USA

Extraordinary sandstone rock structure called Dancing Rocks in the Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia

Remarkable sandstone rock carved by erosion in the Ashar Valley, AlUla, Medina Province, Saudi Arabia

Royal Palace, residence of the Namgyal dynasty, above the village of Stok, near Leh, Ladakh region, state of Jammu and Kashmir, India, Asia

John Ford's Point, Merrick Butte in background, Monument Valley Navajo Tribal Park, Utah, United States of America

Skaill House, a merchants house and museum near Skara Brae, Neolithic village constructed 3100 BC, Orkney Islands, Scotland, United Kingdom