the elder scrolls v skyrim - Where can I find the Ivory Claw to open a door in Reachwater Rock? - Arqade
This is the only canon puzzle (Dragonborn DLC - Kolbjorn Barrow) that's so obscure that I doubt the vast majority of players have solved without Google : r/skyrim
Skyrim:Folgunthur - The Unofficial Elder Scrolls Pages (UESP)
Skyrim - Folgunthur Puzzles - YouTube
Forbidden Legend - The Elder Scrolls V: Skyrim Wiki Guide - IGN