The continuation is found in the 19th chamber, where of passage descending to a depth of surfaces in the 22nd chamber – of dry passages at various levels with a static pool. The way on is within this pool at a depth of where of passage ascends to surface in the 23rd chamber – of large passage, followed by four short sumps that arrive in the 24th chamber. This is of what is described in the guide book as "magnificent" river passage, high and wide, which finishes at a cascade falling from a long lake. There are also more than of high level passages above the river. The way on continues underwater for some reaching a depth of before surfacing in the 25th chamber – called the Lake of Gloom because of its thick mud deposits. The sump at the end of this has been dived for to a maximum depth of before gravel chokes prevented further progress. The end is located about northeast of the entrance.