Guytos is possibly, as Brian Antonson suggests, a misspelling of Guyots. He found a Guyots Glacier in Alaska that flows south of Guyot Hills into Icy Bay. Not much mining activities in that area.
It is perhaps more likely that “Guytos” refers to Guyot Hill in Colorado an area that saw plenty of prospecting and mining activity.
|Guyot Hill, Teller County, Colorado|