 At Camp 10, where it has become a lake, one-fourth of a mile wide, we crossed on a raft, and travelling down a fine wide valley, due east, for five miles, reached a lake at 3,700 feet, the same altitude as Camp 10.I soon discovered that we had crossed an arm of this (Murtle Lake) early in the morning...It is enclosed on the east by low green hills; on the north the mountains are bold, high and rugged.On the south, the most important in case a line of railway should come this way, the mountains are steep but not rough, and generally keep well away from the lake, leaving a margin of hard, firm, level ground along the shore."