Sink holes are created when the earth's crust collapses into caverns created by the slow, seeping dissolving action of water on limestone bedrock.
(Sink holes; are created; ) (caverns; created; by the slow) (when the earth's crust collapses into caverns; seeping; dissolving action of water on limestone bedrock)
Sink holes caverns when the earth's crust collapses into caverns
are created created seeping
by the slow
dissolving action of water on limestone bedrock