: Activate a pickaxe and '''right click''' the rock or cliff, select '''Mining''' > '''Tunnel'''.
After about 50 tunnelling tunneling actions the message {{event|inline|You will soon create an entrance}} will appear. A few actions later an entrance will be created, the exact number of actions is random; averaging around 5 mining actions after the message first appears.
* Tunnels can not be opened if the north-west corner is more than 4 dirts below [[Water#Water level|water level]].
=== Leveling ===
Standing on a flat cave tile will permit the levelling leveling of an adjacent tile so that it will be at the same height. To see if a tile is flat simply activate a pickaxe and hover over the tile.
: Activate a pickaxe and '''right click''' the cave floor tile, select '''Mining''' > '''Level'''.
* In order to raise any corners [[concrete]] must be held in the inventory.
'''Read More''': [[Mine door|Mine Doors]]
=== Dropshaft ===
Dropshafts are typically unfavourable unfavorable in mines. They link two sections of a mine together which have a height difference of many dirts. They are not easily traversable. Vehicles and horses will not be able to move between the levels, and a player must [[Climbing|climb]] to move between the two.
When a drop shaft is going to be created you will receive this message before the wall breaks: {{event|inline|The cave all sounds hallow. A dangerous shaft could emerge.}}