In the Lumbridge Swamp Caves which has a candle lantern (or black candle lantern) from the backpack, for those who fall short the jumps on to stepping stones and "swim to your surface", you can get a candle (or black candle) plus some broken glass. The specialized storage or entry https://knoxpkcvo.webdesign96.com/32256238/fire-rated-glass-no-further-a-mystery