Most caves are formed in limestone or other sedimentary rocks when water trickles down from the surface, dissolving away pockets of rock until, over thousands of years, large cavities and beautiful formations may be created.
(Most caves; are formed; L:in limestone or other sedimentary rocks; T:when water trickles down from the surface, dissolving away pockets of rock) (water; trickles; down from the surface) (large cavities and beautiful formations; may be created; )
Most caves water large cavities and beautiful formations
are formed trickles may be created
L:in limestone or other sedimentary rocks T:when water trickles down from the surface, dissolving away pockets of rock
down from the surface