== Reinforcing cave walls ==
You can reinforce cave walls by adding a [[Support Beam]] to it. You cannot mine a reinforced tile, but it will prevent cave collapse.
== multiple tunnels ==
remind that the wurm world is a 2d world and that all tiles are pillars. you can mine up and down but you [b]can't[/b] make a tunnel above or below another tunnel. it is possible but it will make a big hole between the tunnels.
== Items required ==