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#calcar
#caving
#geology
#karst
#limestone
#mineral
#mountains
#nature
#speleotema
#speleothem
#stalacmite
#stalactita
#stalactite
#stalactites
#stalagmita
#stalagmite
#romania
#europe
#roumanie
#travel
#adventure
#rumanien
#eastern europe
#beautiful
#transylvania
#apuseni
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