Tlamath Lake, however, on examination, proved to be simply a shallow basin, which, for a short period at the time of melting snows, is covered with water from the neighboring mountains; but this probably soon runs off, and leaves for the remainder of the year a green savannah, through the midst of which, the river Tlamath, which flows to the ocean, winds its way to the outlet on the southwestern side. After leaving Tlamath Lake the party headed for Mary's Lake, which, however, after incredible sufferings and hardships, they failed to discover, but they found one which was appropriately christened "Pyramid Lake," and here the record of toils, dangers and sufferings, undergone by the whole party, can only be told in the language of him, who cheerfully toiled and suffered with those under his command, and it is not too much to say, that with the exception of the "Strain expedition," across the Isthmus of Darien, no party of men have ever lived to narrate such sad experiences. We therefore let Fremont, in his own modest way, tell the tale of his own and his companions' sufferings. CHAPTER XXII. "_January 3._--A fog, so dense that we could not see a hundred yards, covered the country, and the men that were sent out after the horses were bewildered and lost; and we were consequently detained at camp until late in the day. Our situation had now become a serious one. We had reached and run over the position where, according to the best maps in my possession, we should have found Mary's Lake or river. We were evidently on the verge of the desert which had been reported to us; and the appearance of the country was so forbidding, that I was afraid to enter it, and determined to bear away to the southward, keeping close along the mountains, in the full expectation of reaching the Buenaventura River. This morning I put every man in the camp on foot--myself, of course, among the rest--and in this manner lightened by distribution the loads of the animals. "_January 4._--The fog to-day was still more dense, and the people again were bewildered. We traveled a few miles around the western point of the ridge, and encamped where there were a few tufts of grass, but no water. Our animals now were in a very alarming state, and there was increasing anxiety in the camp. "_January 5._--Same dense fog continued, and one of the mules died in camp this morning. We moved to a place where there was a little better grass, about two miles distant. Taplin, one of our best men, who had gone out on a scouting excursion, ascended a mountain near by, and to his great surprise emerged into a region of bright sunshine, in which the upper parts of the mountain were glowing, while below all was obscured in the darkest fog.