In this particular case, degradation of salt domes near Napoleonville in Assumption Parish appear to be responsible for triggering the formation of the Giant Louisiana Sinkhole, which has gained considerable size since it first appeared last August. According to the latest estimates, which are constantly changing as the sinkhole expands, more than 12 acres have already been swallowed up, and 20 more are in the process of sinking, with no end in sight.