Saphireking65 wrote:If you snake right there is 0 chance of a cave in.
Sorry to call you out on this SK :/
Normal snaking (non-diagonal, no turning, just going in the screw pattern) has a very minute chance to cause a cave in. Since world gen it has happened to me on I'd say 3 occasions, just a single rock falling in all cases I believe, but I'm sure more can fall. Edit: I'm one hundred percent certain I was snaking normally in those cases. There have been occasional times when I messed up the pattern due to missclick/sleepiness. These 3 times though I was doing everything correctly.
It's safe enough on lvl 1/2. But if you snake lower that cave in can kill you very easily. Had a character kinned in game die about a week ago from this, he was snaking on lvl 3. Insta death from full HHP, and I'm pretty sure he had at least 200+ MHP.
Morale of the story? Don't snake when deep mining. Just build supports. The 0.001% chance of dying per tile isn't worth it if you intend on doing much mining.