Never been but I think I would get bored with being under the ground for so long, it’d be nice to visit though.
Also Dwarves aren’t fat, they are commonly thick boned with very thick skin and big bulky muscles from long hours smithing the weapons and mining the mithral ore they love so much. Short and stocky, the only reason a dwarf would be fat was if he just sat around drinking mead all day long instead of mining and/or smithing.