Uncanny X-Men (Volume 1) #249 - 1988 - Marvel Comic - VFMarvel
Uncanny X-Men (Volume 1) #236 - 1988 - Marvel Comic - VF
As the remaining X-Men bury their recently deceased teammate Storm, a call is received by the base's computer. The call is from the missing Lorna Dane, a.k.a. Polaris, asking for help. The X-Men investigate the call, leading them to Punta Arenas, Chile.