The coast from Refuge Inlet runs nearly straight in a generally northeast direction to Point Barrow, and consists of steep banks of clay, gravel, and pebbles, in appearance closely resembling glacial drift, bordered by a narrow, steep beach of pebbles and gravel, and broken at intervals by steep gulleys which are the channels of temporary streams running only during the period of melting snow, and by long, narrow, and shallow lagoons, to whose edges the cliffs slope gradually down, sometimes ending in low, steep banks. The mouths of these lagoons are generally rather wide, and closed by a bar of gravel thrown up by the waves during the season of open water. In the spring, the snow and ice on the land melt months before the sea opens and flood the ice on the lagoons, which also melts gradually around the edges until there is a sufficient head of water in the lagoon to break through the bar at the lowest point. This stream soon cuts itself a channel, usually about 20 or 30 yards wide, through which the lagoon is rapidly drained, soon cutting out an open space of greater or less extent in the sea ice. Before the sea opens the lagoon is drained down to its level, and the tide ebbs and flows through the channel, which is usually from knee-deep to waist-deep, so that the lagoon becomes more or less brackish. When the sea gets sufficiently open for waves to break upon the beach, they in a short time bring in enough gravel to close the outlet. The cliffs gradually decrease in height till they reach Cape Smyth, where they are about 25 feet high, and terminate in low knolls sloping down to the banks of the broad lagoon Isûtkwɐ, which is made by the confluence of two narrow, sinuous gulleys, and is only 10 feet deep in the deepest part.