: Activate a pickaxe and '''right click''' the rock or cliff, select '''Mining''' > '''Tunnel'''.
Each tunneling action has a chance to create a [[stone shards|stone shard]]. After a number of [[stone shards]] are created, usually 9, the message {{event|inline|You will soon create an entrance}} will appear. A [[stone shard]] or two later, and an entrance will be created.
* Tunnels can not be opened if the north-west corner is more than 4 dirts below [[Water#Water level|water level]].