Gently paddling with his hands, just enough to keep himself afloat, Glen looked anxiously about for some beach or other place at which he might effect a landing, but could discover none. The upper edge of the snow-field, that bounded the lake on one side, projected far over the water, so that, while he might swim under it, there was no possibility of getting on it. On all other sides sheer walls of rock rose from the water, without a trace of beach, or even of boulders, at their base.