Fungus Cave
The Fungus Cave is located on old Krawk Island map next to Smugglers Cove. Here users can mutate their Krawk Petpet into the Krawk Neopet. Petpets that have become Krawks through the Petpet Lab Ray will not mutate.
On the new Krawk island map, its a bit spread out. Notes: Clickable area is the pointy rock.