Use makeshifted barrow and barrowfort pieces. Shouldn't go too deep, but should include some sort of sanctum with a (lone) fire burning in the middle, a room for mummification practices, and a minor burial area.
Will require spineinside's Dragon Cult assets for cluttering, but the claimant can start work on the stone shell.
Cell -106,19
The exterior can be found here (use the latest file)
