Dwarves believe that to go three days without seeing the sun is a sign that good fortune is on its way.
Dwarves, who live in mountains/underground, demand a burial in stone...that way the soul becomes part of the mountain and enriches the mining.
Dwarves hold elaborate wakes in honor of the dead -- drinking, singing songs, and telling tales of the deceased and his ancestors. The goal of a Dwarvish wake is to make enough noise so the gods take notice when a Dwarf enters heaven.