LrC 10.2, macOS Big Sur 11.2.3 on iMac Pro w/ 64 GB memory and Radeon Pro Vega 64 16 GB.
After Import, and only after Import, access to the Map module, either via the pin on an image or directly to the tab, results in LrC instantly blowing out and presenting Adobe and Apple crash report dialogs. After recommendation of another Adobe forum's administrator to reset preferences and reboot, problem still exists.
Many crash reports submitted and should be available for analysis.