"Crow's Nest Pass, Elevation 4,438 feet. In the morning I went back on the trail for about half a mile, to connect with the survey of yesterday, while Dr. [George] Dawson went up a creek to look for coal, some of which I had seen in the gravel bed of the creek. The lunch point to-day was given out at breakfast at Crow's Nest Lake, which I reached about two o'clock in the afternoon and was pleased to find that Dr. Dawson had decided to camp the rest of the day at that stop, in order to explore a wonderful cave in the vicinity. I went over with him to see it and we spent the afternoon there. There was a grand gateway at the entrance like that from some huge Norman Cathedral, with a clear floor of crystal water which wells up at the back. One dry passage about four feet high leads back one hundred feet and then drops under the water. Old Indian devices in colour were to be seen on the threshold and over the entrance to the passage and on the other side of the main entrance over the water. It seemed to have been lately inhabited by bears and marmots."

(Joseph Tyrrell, July 9, 1883)