For 10 points, name this Alaskan peninsula south of Anchorage.
On the northeastern end of this landmass, the 4100 meter-long, one lane-wide Anton Anderson Memorial Tunnel leads to the port of Whittier, a town whose entire population lives in one giant apartment building. The western part of the Chugach National Forest borders this landmass's namesake national park, which features the Harding Icefield near Exit Glacier, as well as numerous iconic (*) fjords. The name of this landmass roughly translates to "flat, barren land" in the Athabascan languages. This ►  peninsula was less than 50 miles from the epicenter of the Good Friday Earthquake, which caused multiple tsunamis and a massive underwater landslide in neighboring Prince William Sound. This peninsula is separated from the Seward Peninsula by Cook Inlet. For 10 points, name this Alaskan peninsula south of Anchorage.
On the northeastern end of this landmass, the 4100 meter-long, one lane-wide Anton Anderson Memorial Tunnel leads to the port of Whittier, a town whose entire population lives in one giant apartment building.
Kenai Peninsula (accept Kenai Fjords)