Exteriors walls of the ruins of the Rhyolite School. Rhyolite, Nevada. Oddly, the school seems to be one of the better preserved structures in this Nevada ghost town – even the banks have suffered more over the years. Not to suggest that it is in great shape – the roof is gone along with all of the windows and doors – but the walls are still standing for the most part.
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Ruins of the school and bank at sunrise in the ghost town of Rhyolite, Nevada. Rhyolite is a mining ghost town just east of the California/Nevada border between Death Valley National Park and Beatty, Nevada.
When we arrived at Rhyolite just before dawn, it looked like the light was perhaps not going to cooperate. While parts of the sky were quite blue, there was a layer of clouds to the east where the sun was rising. At times the light turned out to be flat and gray, but every so often it would come through the clouds and wash the scene in this wonderful warm light.
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Black and white photograph of the early evening view of Death Valley from Aguereberry Point as the shadow of the Panamint Range begins to extend across the Valley.
Aguereberry Point provides an astonishing viewpoint over Death Valley and a 360 degree panorama that extends to the southern Sierra Nevada range.
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The tracks of the famous “moving rocks” of the Racetrack Playa cross in evening light.
This was an absolutely beautiful evening on the playa, with wonderful light and interesting clouds. I was impressed by these long and straight moving rock trails that crossed and were heading in nearly opposite directions.
There is at least one believable theory about how the rocks moved. (No, not the one involving alien landings… ) It goes sort of like this: A playa like this one is formed by, believe it or not, flooding. During occasional wet seasons, the water washes down from the surrounding hills and fills the playa with silt and few inches of water. The original theory suggested that this was enough – that strong winds would be enough to move the rocks across the slick surface of the playa. (The rocks seem to come from a hill at the sound end of the playa.)
There is a problem with this notion. While the Racetrack is a very windy place, and the winds might be strong enough to move small rocks, someone calculated that in order to move the largest rocks the winds would have to be in the range of several hundred mph! The playa is windy, but no that windy!
Then someone realized that, counterintuitive though it may be, it can get cold enough on the playa to freeze the surface of water collected there. If the rocks were to become locked in the surface ice, the winds could act on the area of the ice surface much as they do on arctic ice packs. As the ice moves it might drag the rocks along, and if sections of the playa were frozen or if the ice broke up groups of rocks might be moved in the same manner. A further “refinement” of the theory suggests that if the surface froze as the water level was rising that rocks locked in the ice might even be slightly lifted, making it easier for them to move.
This seems reasonable given some of the visible evidence. In places groups of several rocks that are somewhat close together have left parallel curving tracks – the explanation is that they were locked together in a section of the ice that moved them in the same way. It even is consistent with the appearance of strange phenomenon such as these rock tracks that cross at right angles – they would have been moved at different times and under different wind conditions.
I have not read any theories about how often the rocks move. When I first heard about the place many years ago, I think I almost imagined a magical place where rocks were sailing about on the flat surface. Then I visited and I began to imagine that the rocks might only move in wet years – perhaps every decade or so. But with more visits and more thought, it began to seem to me (in my unscientific musings) that the conjunction of conditions required to move the rocks (flooding, freezing, plus high winds) might actually occur very rarely. I now make the assumption that the actual movement of the rocks may be a very rare thing, indeed.
