Which wood is used for firewalking?

Answer 1

If by "firewalking" you are referring to walking on charred wood/with flames underneath of it, then it doesnt matter what type of wood it is. The ashes (the VERY hot part, unless you have stirred the flames/coal) is on the bottom so you can walk on top without getting seriously burned (firewalking is not recommended)

Answer 2

Light to medium density wood which burns at 1200' Fahrenheit

Hard woods burn at temperatures 1800 - 2000' Fahrenheit which would result in third degree burns

there Is no build up of ash acting as an insulator, this is a nonsense myth