vidian wade through acid

Vidian waded through a river of acid. It was everywhere on the factory portion of Forager: ankle-deep in some places, waist-high in others. It was destroying the flooring, and had already eaten into the bulkheads below; he anticipated explosive decompression at any minute.
The crossing had started as a panicked mechanical run - and then slowed to a hideous slog as his legs wasted away to skeletal struts. His arms had been further damaged, too, in the trip.

A New Dawn, ch. 55, pg. 652