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Sykia Beach or Sykia Cave was a sea cave the roof of which collapsed, creating a sink hole. It is located on the west coast of Melos Island in Greece and is accessible only by sea.
Kekova, Antalya, Turkey
Tulum, Mexico-
Amazing cliffs in Sagres, Algarve, Portugal.
Breathtaking blue water, force of nature
Palisade Head Rock Formation on Lake Superior in Minnesota's North Shore
Natural arch above ocean, Algarve, Portugal. View of the natural stone arch during beautiful sunny day.\nTurism concept
Overcast skies above clear waters on a rocky coastal feature.
Beautiful landscape of vegetation bordering groundwater hole, The Three Eyes National Park, Dominican Republic.
Zakynthos: the famous blue caves with on  foreground the ionian sea.
Blue Grotto Sea Caves - Malta
A big hole trough the mountain is what remain of an old cave ruined millions of year ago
Lake Cave of Tapolca, Hungary.
Newfoundland and Labrador, Canada.
Boca do Inferno cave near Cascais, Portugal
Indoors structure of the Nuraghe La Prisgiona, a Nuragic archaeological site dating back to the 2nd millennium BC, located near Arzachena in Gallura, in northeast Sardinia.
water of Bimmah sinkhole in Oman
Adventurous Woman Hiking in Yosemite National Park
Blue Grotto, Malta - 03 Jan, 2020: Blue Grotto and the Natural Arch are one of the attractions of the island of Malta.
The Three Eyes National Park (Los Tres Ojos) in Santo Domingo, Dominican Republic
Dramatic view of a rugged Atlantic ocean coastline in Portugal Algarve Region
Woman practicing psicobloc also called deep water soloing rock climbing in the island of Menorca Balearic Islands Spain
Lagos, Algarve, Portugal- October 20, 2022: People canoeing and visiting limestone formations and natural features in Ponta da Piedade
canyon, mountain gorge, sun, dagestan, Karadakh narrows, caucasus
Cave in the Muelle de Orchilla on the southwest coast of El Hierro. Canary Islands
Full length shot of a young couple hiking in the mountains
Dark cave view from inside with a lumen. Stalactites and stalagmites inside the stone grotto. Colorful stones in the cave. Lighting electricity beauty of the cave.
Kids at Gljufrafoss Waterfall
A view of beautiful sandy beach in Armacao de Pera seaside town, Algarve region, Portugal. View from a boat.
family trip in historical caves
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