heads at unnamed glacier, flows to head of Wright River and 31 mi. NE of Juneau, Coast Mts. 8 miles long.
Descriptive name given in 1932 by B. D. Stewart, U.S. Geological Survey (USGS), "on account of the fact that the canyon and valley occupied by this stream are hidden from view by surrounding mountains**."
Bacon Glacier, Bridge Glacier, Speel Glacier, Wright Glacier,
Islands:Lakes:Boundary Lake, Swineford Lakes, Turner Lake,
Mountains:Mount Fremont Morse, The Horn Peaks, Kluchman Mountain, Mount Swineford, Wright Peaks,
Rivers:Sittakanay River, Wright River,
Streams:Boundary Creek, Fish Creek, Hidden Creek, Moose Creek, Yehring Creek,