I created a couple of versions of the Rainbow Cave maps. I published them in the Jonstown Compendium. I created this based on the "You may also create your own version of handouts for official RuneQuest and HeroQuest Glorantha campaigns". If this is not permissible content please let me know.
https://www.drivethrurpg.com/product/310150/Rainbow-Caves-Map?src=newest_community