From the ninth chamber, a dive of about passes almost immediately from the Dolomitic Conglomerate into the limestone, and descends steadily for to a depth of under a couple of high rifts with airbells, which are enclosed air spaces between the water and the roof, before reaching air space in the 19th chamber. The 20th chamber is at the top of a large boulder slope – long, wide, and high. From here a roomy passage some long ascends towards a now-blocked fossil resurgence in the Ebbor Gorge. The total length of passages in this area is about . A passage near the end connects with Chamber 24 near Sting Corner.