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Small Tsingy, Tsingy de Bemaraha National Park, UNESCO World Heritage Site, Melaky Region, Western Madagascar, Africa
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Karst Cave at Xinwen Stone Sea Global Geo Park, Sichuan Province, China, Asia
Marble landscape of Thassos, Greek Islands, Greece, Europe
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Calcified limestone terraces, Pamukkale, Turkey, Eurasia
Spectacular limestone outcrops, forests and waterfalls of Zhangjiajie Forest Park in the Wulingyuan Scenic Area, Hunan Province, China
Limestone pavements and the Ribblehead Viaduct in the Yorkshire Dales, Yorkshire, England, United Kingdom, Europe
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Spectacular limestone outcrops and forested valleys of Zhangjiajie Forest Park in the Wulingyuan Scenic Area, Hunan Province, China
Baroque mestizo limestone facade of the Cathedral in this colonial-style provincial capital, Riobamba, Chimborazo Province, Central Highlands, Ecuador, South America
Limestone pinnacles in Shilin, Stone Forest, at Lunan, Yunnan, China, Asia
Cavers shining lamps on bats in Pokhara Bat Caves, Pokhara, Nepal, Asia
Malham Cove, limestone cliff 70 metres high, Malham, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe
Fort Lovrijenac (St. Lawrence Fortress) at sunrise, Dubrovnik, Dalmatian Coast, Adriatic, Croatia, Europe
Tsingy de Bemaraha National Park, UNESCO World Heritage Site, Melaky Region, Western Madagascar, Africa
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Cenote Zaci, Valladolid, Yucatan, Mexico, North America
Limestone stalactites and stalagmites in Ballic Cave, near Tokat, Central Anatolia, Turkey, Asia Minor, Eurasia
Ingleborough seen from the limestone pavement on Twistleton Scar, Yorkshire Dales National Park, North Yorkshire, England, United Kingdom, Europe
Limestone Pavement above Watlowes Dry Valley, near Malham, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe
Tsingy de Bemaraha National Park, UNESCO World Heritage Site, Melaky Region, Western Madagascar, Africa
Marble landscape of Thassos, Greek Islands, Greece, Europe
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
View to limestone pinnacles of Faraglioni rocks from Giardini di Augusto, with spring flowers and boat, Capri Town, Capri, Italy, Mediterranean, Europe
Hikers on walkways admire the creek through the limestone gorge, Aare Gorge, Bernese Oberland, Canton of Berne, Switzerland, Europe
Traditional Longtail boats moored by Phra Nanag Beach with limestone islands in the background, Krabi, Thailand, Southeast Asia, Asia
Small Tsingy, Tsingy de Bemaraha National Park, UNESCO World Heritage Site, Melaky Region, Western Madagascar, Africa
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Limestone waterfall, Semuc Champey, Guatemala, Central America
Limestone and shale rock formations on the shore at Kilve, Somerset, England, United Kingdom, Europe
Thin-bedded Oligocene Cobden limestone, Punakaiki, Pancake Rocks, Greymouth, South Island, New Zealand, Pacific
Greene's Rabbitbrush (Chrysothamnus greenei) growing among the Tufa towers near the shores of Mono Lake, California, United States of America, North America
Sunset over the limestone pavement at Malham Lings, near Malham, North Yorkshire, England, United Kingdom, Europe
Tsingy de Bemaraha National Park, UNESCO World Heritage Site, Melaky Region, Western Madagascar, Africa
Marble landscape of Thassos, Greek Islands, Greece, Europe
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Rocky coast of Thassos, Greece, Europe
Marble landscape of Thassos, Greek Islands, Greece, Europe
Water of creek flows in the narrow limestone gorge carved by river, Aare Gorge, Bernese Oberland, Canton of Berne, Switzerland, Europe
A solitary tree on the limestone pavement at Malham Lings, near Malham, North Yorkshire, England, United Kingdom, Europe
Limestone Pavement above Watlowes Dry Valley, near Malham, Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe
Marble landscape of Thassos, Greek Islands, Greece, Europe
Limestone stalactites and stalagmites in Ballic Cave, near Tokat, Central Anatolia, Turkey, Asia Minor, Eurasia
Limestone karst rocks at Phra Nang Beach, South Islands, Thailand, Southeast Asia, Asia
Water of creek flows in the narrow limestone gorge carved by river, Aare Gorge, Bernese Oberland, Canton of Berne, Switzerland, Europe
Marble landscape of Thassos, Greek Islands, Greece, Europe
In Guilin, irrigation channel among rice paddies in area of limestone towers, Yangshuo, Guangxi Province, China
Limestone pavements above Southerscales Scars, Ingleborough, Yorkshire Dales, Yorkshire, England, United Kingdom, Europe
Limestone rocks, White Desert, Western Desert, Egypt, North Africa, Africa
Rocky coast of Thassos, Greece, Europe
Marble landscape of Thassos, Greek Islands, Greece, Europe
Marble landscape of Thassos, Greek Islands, Greece, Europe
Limestone pavements, Burren, County Clare, Munster, Republic of Ireland, Europe
Cliff top footpath running alongside limestone cliffs, Winspit, Isle of Purbeck, Jurassic Coast, UNESCO World Heritage Site, Dorset, England, United Kingdom, Europe
Halong Bay, UNESCO World Heritage Site, Vietnam, Indochina, Southeast Asia, Asia
Traditional Longtail boats moored by Railay Beach with limestone cliffs in the background, Ao Nang, Krabi, Thailand, Southeast Asia, Asia
Ancient quarry of Alyki, Thassos, Greek Islands, Greece, Europe
Marble landscape of Thassos, Greek Islands, Greece, Europe
Marble landscape of Thassos, Greek Islands, Greece, Europe
The Pinnacles limestone formations at sunset in Nambung National Park, Western Australia, Australia, Pacific
Ingleborough, seen from limestone benches above Kingsdale, Yorkshire Dales, Yorkshire, England, United Kingdom, Europe
Minerva Terrace, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Rocky coast of Thassos, Greece, Europe
The Pinnacles limestone formations at sunset in Nambung National Park, Western Australia, Australia, Pacific
Palette Spring, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Mound Terrace, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Marble landscape of Thassos, Greek Islands, Greece, Europe
Rocky coast of Thassos, Greece, Europe
The Pinnacles limestone formations at sunset in Nambung National Park, Western Australia, Australia, Pacific
View from the limestone terraces to the fishing village, Ajuy, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Limestone rocks, White Desert, Western Desert, Egypt, North Africa, Africa
Palette Spring, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Mound Terrace, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Tourist boat in the turquoise sea framed by limestone cliffs, Porto, Southern Corsica, France, Mediterranean, Europe
Traditional Longtail boat moored by Phra Nanag Beach with limestone islands in the background, Krabi, Thailand, Southeast Asia, Asia
Ingleborough seen from Twistleton Scar, Yorkshire Dales National Park, North Yorkshire, England, United Kingdom, Europe
Palette Spring, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Traditional Longtail boats moored by Railay Beach with limestone cliffs in the background, Ao Nang, Krabi, Thailand, Southeast Asia, Asia
Limestone terraces at the cliffs to the Mirador, Ajuy, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Traditional Longtail boats moored by Phra Nanag Beach with limestone cliffs in the background, Krabi, Thailand, Southeast Asia, Asia
Limestone rocks, White Desert, Western Desert, Egypt, North Africa, Africa
The Pinnacles limestone formations at sunset in Nambung National Park, Western Australia, Australia, Pacific
View from the limestone terrace to Ajuy, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Devil's Thumb and Palette Spring, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Longtail boat and limestone cliffs, Koh Pakbia, Koh Hong Islands, Ao Nang, Krabi, Thailand, Southeast Asia, Asia
The Pinnacles limestone formations at sunset in Nambung National Park, Western Australia, Australia, Pacific
Boats and limestone cliffs at Mesovrika Beach on the northeast coast, Anti-Paxos, Ionian Islands, Greek Islands, Greece, Europe
Durdle Door, an arch of Purbeck limestone on the coast, Dorset, England, UK
Baroque mestizo limestone facade of the Cathedral in this colonial-style provincial capital, Riobamba, Chimborazo Province, Central Highlands, Ecuador, South America
Karst limestone scenery on the Li river (Lijiang) in Yangshuo, near Guilin, Guangxi Province, China, Asia
Karst limestone rock formations at Zhangjiajie Forest Park, Wulingyuan Scenic Area, UNESCO World Heritage Site, Hunan Province, China, Asia
Rock climber tackles a very overhanging route on the famous limestone cliffs of the Gorge du Tarn in the Massif Central, near Millau and Rodez, south west France, Europe