Portage Glacier is located adjacent to Turnagain Arm , 50 miles southeast of downtown Anchorage . Road access is via the Seward Highway to the former town of Portage , which was flooded and subsequently vacated following the 1964 Alaska earthquake . The Portage Glacier Road runs , mostly past USFS campgrounds , to the Begich , Boggs Visitor Center . The main road used to end here , but now continues eastward , leading to the Anton Anderson Memorial Tunnel and to Whittier
1964 Alaska earthquake
1964 Alaska earthquake
Portage Glacier