Glory to Hanuman.
According to Cinefex #158, the Rwenzori Mountains of Uganda were used as a model for the mountain lair of the Jabari.
Road to Jabariland
According to ExploreGeorgia.org the Vulcan Materials in Stockbridge, GA mining site was used for the snowy mountain road in Wakanda on the way to Jabariland.
MAP – Jabariland
MAP – Road
(Black Panther, 2018)
MCU: Location Scout 