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Levade walkway on the coast at Ponta do Clérigo on Madeira island in the middle of the Atlantic Ocean during a beautiful summer day
A cave hidden in a cliff above sea level full of clear blue water. Coastline on the island of Corsica in France in Europe.
Young Argentinian woman hiking up Tepoztlan mountain, Mexico
Light at the end of the tunnel on the path by the levada water canal on the Madeira Island, Portugal.
Low angle view to the cave opening, Algar do Carvao cave, volcanic tunnel, at Terceira island, Azores
Landscape view of a cave on the side of Santa Cruz Island in Channel Islands National Park (California).
Beautiful mountainous interior of the island.
tree inside Pico island gruta das torres lava tunnels view
Natural cave in the mountain with jungle theme around.
Opening to light
Thousands of Egyptian Fruit Bats or Egyptian Rousettes roost and fly in massive, tightly packed groups and in a cave in Queen Elizabeth National Park.
Natural pools of ocean water with sheer cliffs at Seixal Madeira Portugal
The beautiful Levada walk between Queimadas and Calderão Verde on Madeira island.
Plant covered walls of Algar do Carvão, Terceira Island, Azores
Algar do Carvao cave at Terceira island, Azores vacation.
Unrecognizable persons going down the steps 100 m in underground volcanic tunel. Colorful volcanic rocks in the Algar do Carvao cave, at Terceira island, Azores
view of the cave algar do cavalho an hole in the heart of the earth. terceira, azore, portugal
Woman doing a nature hike going through the man made cave system to channel irrigation water in the island of La Palma. It is the beautiful and well know Marco y Cordero 13 mile hiking trail inside a canyon on the East side of the island.
Enjoying the atlantic vishing village of Poris de Candelaria at sunset in the Canary Islands
In The Cave At The Baiyang Waterfall Trail, Taroko Gorge National Park, Hualien, Taiwan
Algar do Carvao or Cavern of Coal in Terceira Island, Azores, Portugal. It is an ancient lava tube or volcanic vent located in the central part of the island of Terceira in the Portuguese archipelago of the Azores
Naturral pool with an arch in Seixal at the North coast of Madeira island during a beautiful summer day.
View through tunnel of Levada Do Rei, water irrigation channel and PR18 hike, from Sao Jorge ending at the source in Ribeiro Bonito, Madeira, Portugal.
July and August -1986, old Positive Film scanned, Tourists are going to adventure Marble Arch Caves, Enniskillen,  Northern Ireland.
View from the stone cave on the popular tourist trail through Madeira island.
View from inside of Algar do Carvão cave, inside an extinct volcano,  in Terceira  island , Azores archipelago.
Mine The Jayona is an old iron mine located in the mountains of the same name, in the town of Fuente del Arco, province of Badajoz (Spain), declared a natural monument
Jomblang cave, Indonesia
View into a large cave used by pirates in the past near Ajuy in Fuerteventura, Spain
Tunnel on mountain road in Madeira,Portugal.
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