Thorns are a natural block found hanging from the Cavern and Lake Cavern layers in the Betweenlands. They can be placed on the side of blocks and will grow down similarly to Vines. They damage any players that touch them, but not Betweenlands mobs. When harvested with a Sickle, it drops a Thorn Branch, which can then be ground into Ground Thorns.
Thorns can be lit on fire with an Octine Ingot, as one of the few sources of tinder that work in the dimension.
- Beta 1.0.0: Introduced.