The wash enters from the left and making a southwards bend into the widened Amargosa River Valley.
Sperry is further along to the right than the image shows, but about where the white streak exits.
Beyond the site is the Sperry Wash road which connects Dumont Dunes and the area of the Western (talc) Mine high up in the Kingston Range.
The Amargosa's water is 'Sweet", meaning that it has some (moderate ?) amounts of arsenic dissolved in it.
Usable in an emergency, as a long term supply it would be avoided.
Outside of the Canyon proper, this area has some of the most spectacular fills and cuts anywhere along the railroad.
Needing to provide lots of drainage for the cloudbursts, the washes encountered were filled and provided with multiple corregated iron tube, cement buffered culverts.
While not of concern today, many of the wrecks on the T&T were caused by culverts failing to drain the washes and giving way under the passing train.
That they reached this point in the summer of 1906, one of the hottest, was their downfall in attempting to beat the Clark road into Tonopah.
It reappears on the flat plain above the Dumont Dunes.
To continue following the Amargosa, rejoin the Sperry Wash road and turn westwards down towards California Hiway 127.