When thinking about heroquests, I strongly recommend reading Jung’s “Red Book” aka the Liber Novus. That and “Inanna’s Descent into the Underworld“. And Gene Wolfe’s “Soldier of the Mist.” Those three books combined with “King of Sartar” and the “Glorantha Sourcebook” and you are much of the way.
Map of part of the Hero Plane associated with the Aroka Quest
