Melttube Fungi

Also called the Spicy Shroom is a tube shaped long type of mushroom that can heat up anything inside its tube, potentially melting it.
It is not something you should touch with your bare hands.
Not only is it hot, but it will leave long lasting burns that feel similar to rubbing fresh chilli into an open wound, which was also the origin for the Spicy Shroom name!

It can be found nearby volcanic areas.