im thinking that at the beginning of season 3 after darc saves kaly and takes her to mt. rawn we are then shown a flashback (or perhaps this flashback is at the very beginning of the season) we get to see higgs alive and how he came to know of mt. rawn and the connection of such to darc.

how does higgs know about the happy place at the top of mt rawn, who told him or did he find out himself, was it darc?