The Volcano is a location that appeared in Battle for Dream Island. It is the area where the 23rd contest took place, in Don't Pierce My Flesh. It also reappeared in Hurtful! as the last challenge to recap.
The Volcano first appeared in Don't Pierce My Flesh, where the final 5 contestants had to escape it. Eventually, they all fail the challenge as the volcano erupted. Flower and Firey were given immunity thanks to the speaker boxes that they made, and Spongy, Bubble, and Leafy were up for elimination.
In Hurtful!, Bubble and Flower made it to the pole leading out of the volcano, but only Bublle climbs out of it, giving her immunity.
It has not appeared again since Season 1.