Bochum1805:
Lummelundagrottan / Lummelunda cave, Gotland
Bochum1805:
Lummelundagrottan / Lummelunda cave, Gotland
Bochum1805:
Fossil, Lummelundagrottan / Lummelunda cave, Gotland
Bochum1805:
Ett före detta korallrev, Lummelundagrottan / Lummelunda cave, Gotland
Bochum1805:
Lummelundagrottan / Lummelunda cave, Gotland
Bochum1805:
Lummelundagrottan / Lummelunda cave, Gotland
Bochum1805:
Lummelundagrottan / Lummelunda cave, Gotland
Bochum1805:
Lummelundagrottan / Lummelunda cave, Gotland
Bochum1805:
Lummelunda cave, Gotland, Sweden
Bochum1805:
Stalactites, Lummelunda cave, Gotland
Bochum1805:
Stalactites, Lummelunda cave, Gotland
Bochum1805:
Lummelunda cave / grottan, Gotland
Bochum1805:
Lummelunda grottan / cave, Gotland
Bochum1805:
Lava caves, Gruta do Carvão, Sao Miguel, the Azores
Bochum1805:
Inside the lava tubes, Gruta do Carvão, Sao Miguel, the Azores
Bochum1805:
Cave in the Nature Reserve/ Grottan Stora Förvar, Stora Karlsö