Located on the W edge of Berg Lake, 21.7 km (13.5 mi) N of Mount Campbell.
Named for a historic prospector nicknamed "Happy Hallow"
Bering Canyon, Martin River Glacier, Slope Glacier, Steller Lobe,
Hills:Lakes:Lake Ivanov, Lake Roselius, Berg Lake, Berg Lakes, Canyon Lake, Fifth Lake, Fourth Berg Lake, Second Berg Lake, Starodubtsov Lake, Third Berg Lake,
Mountains:Mount Campbell, Carbon Mountain, Doughton Peak, Green Hill, Monument Mountain, Nichawak Mountain, Shockum Mountains,
Ridges:Central Medial Moraine Band, Cunningham Ridge,
Streams:Bear Creek, Canyon Creek, Clear Creek, Jessie Creek, Kathleen Creek, Moore Creek, Sheep Creek, Stillwater Creek, Trout Creek,