NAPOLEONVILLE, La. (AP) — Officials say the sinkhole in Assumption Parish has swallowed up more trees and part of a road built to expedite cleanup activities as it continues to expand.

Officials at the Assumption Parish Police Jury said Wednesday there was a 30 foot-by-50 foot slough into the southeast side of the hole overnight. The bog had never sloughed in that area before, officials say.

Experts say the sloughing in is expected. Last month, the sinkhole grew by 50 feet when the surrounding environment fell in, taking a boat with it. Two cleanup workers almost fell in and cleanup activities were suspended.

A failed underground brine cavern encased within a mountain of salt is believed to have caused the sinkhole, which appeared Aug. 3.