I was safely digging down with 2x1 blocks so that I will always at least stand on a block. Well, I got bored and decided to dig 1x1 block straight down. Big mistake. Lava. Then I grabbed some ladders from my chest and decided to go down there and check if any items managed to survive. I was too busy looking down that I forgot I ran out of ladders... I fell. Lava. Again...