The Dawson City landslide is a prehistoric slope failure at the northern end of the town. It occurred along the faulted contact between an ultramafic unit from the Slide Mountain terrane and a metasedimentary unit from the Yukon-Tanana terrane. The very blocky nature (seven discontinuity sets) of the failed rock mass led to a pseudo-circular failure mechanism. Based on geomorphic observations suggesting moving masses in the headscarp and deposit, various monitoring techniques were begun in 2006 to confirm and quantify the rate of displacement. Data collected from five years of monitoring suggest that an unstable section in the headscarp is moving downslope at a rate of 4.3 to 11.9 cm/yr, whereas the lower part of the landslide deposit is moving between 8.5 and 20 cm/yr. XRD analysis of the silt and clay-size particles in the deposit revealed the presence of talc, chrysotile, and lizardite.