Sinkhole

Cave=

Ruins=

"I plugged it a long time ago."

- Maxwell

A Sinkhole is the entrance to a Cave or Ruins and can be found randomly in the world and in the first level of a Cave.

Each Sinkhole leads to a new Cave or Ruin. When first discovered, the Sinkhole will be a Plugged Sinkhole and is covered with a jagged rubble mound. Mining the Plug reveals the hole with a rope going down into its depths while providing Flint and Rocks on the surface and Thulecite and Thulecite Fragments underground. It takes six hits from a Pickaxe to unplug it. Once unplugged, Batilisks will spawn from the Sinkhole at dusk and return underground in the morning.

There have been sightings of three or four Sinkholes in a world. Plugged and open Sinkholes are marked on a map by a gray mound and a hole with a red arrow pointing downwards, respectively.

The number of sinkholes in the world settings can only be "Default" and "None".

Trivia

 * The sinkholes were plugged up by Maxwell a long time ago, as revealed upon examination.
 * Basalt found in previously generated worlds were actually placeholders for Sinkholes and were turned into Sinkholes when the Caves update was released.
 * Using DebugSpawn ("basalt") will still spawn Basalt, which doesn't change into a Sinkhole, compared to DebugSpawn("cave_entrance"), which directly spawns a Sinkhole.
 * Sinkholes originally had a lighter gray color.

Gallery
Zapadlisko