Did he freeze?
T’Challa & Okoye pull Nakia out of a mission in the Sambisa forest of Nigeria. While the aerial shot was digitally created, and the ground shots replicated in a soundstage (according to Cinefex 158), the Sambisa Forest is an actual location in the Northeast section of Nigeria, very near to what would be the border for Wakanda.
MAP
(Black Panther, 2018)
MCU: Location Scout 