The largest of the three main camps serving the brief "Lake District" gold boom from 1878-1881, Mammoth City once boasted a population of more than 1,000 people and is said to have had 22 saloons, 2 breweries, 5 restaurants and 2 newspapers. Today there is only a sturdy historical marker built at the foot of Panorama Dome (near the top of Old Mammoth Road). A short path heads off from a parking turnout across the road from the marker, through a thick stand of alders and across a small creek to a series of old tailings piles from the mines up on what was then called Mineral Hill, now Red Mountain.