Uncanny X-Men - The New Age Vol. 3: On Ice
Chris Claremont (Writer), Alan Davis (Artist)
High adventure in the Savage Land! The X-Men discover a wondrous and advanced new civilization when they return to the isolated, Antarctic jungle - but it's none too friendly toward humans...or mutants! And could the X-Men have unintentionally helped them take their first steps toward world domination? Plus: The team gains a highly unexpected new member!
Uncanny X-Men (1st series) #455-461