Peloton Enters San Jose – 2008 Amgen Tour of California. San Jose, California. February 20, 2008. © Copyright G Dan Mitchell.
Cycling fans will recognize the rider at the right as the great Mario Cipollini.
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Three Riders in Turn, San Jose – Amgen 2008 Tour of California. San Jose, California. February 20, 2008. © Copyright G Dan Mitchell.
I arrived too late for the finish of the February 20 Modesto to San Jose stage of the 2008 Amgen Tour of California. As I ran toward the race route through downtown San Jose I saw the first two riders go by a couple hundred feet ahead of me. Aw, darn! Anyway, I set up at the first corner I came to and photographed the rest of the pack as they came through the second-to-last turn of the race.
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Cliffs, Surf, and Fog – California Coastline. South of San Francisco, California. January 12, 2008. © Copyright 2008 G Dan Mitchell – all rights reserved.
Fog and winter light on cliffs and Pacific coast surf in winter. South of San Francisco, California
I have always been fascinated by light shining directly through the atmosphere, coming straight on towards me – the brighter and more luminous the glow the better. You frequently find me aiming my camera almost straight toward the sun. (I’ve become a master at shading lenses with hands, hat, pieces of paper, you name it.) I also love atmospheric recession, the illumination of distance by the haze, as more distant subjects lose contrast and detail. This scene had all of those things, and perhaps even more.
I had been driving the coast highway (highway 1) between Santa Cruz and San Francisco on this winter day, and in places it was very foggy – but here it was the kind of fog that, while dense near the ground, is shallow enough that the light from the sun shines though and can even make looking at the clouds almost unbearable. I pulled over at a place where it looked like I might be able to walk out onto a shoreline bluff high above the water and see over the edge to the water and cliffs below and beyond. A saw this line-up of receding cliffs dropping to the surf and decided to shoot along them towards the sun. (I was surprised to find later that hidden in the fog is a small creek dropping from one section of the cliff in a small water fall.)
From the original post: “This high key image is a bit different from what I usually do. The fog was backlit by some fairly bright sunlight and, although it is nearly impossible to see in this little jpg image, there is a lot of detail in the frothy white surface of the water on the right side.”
G Dan Mitchell is a California photographer whose subjects include the Pacific coast, redwood forests, central California oak/grasslands, the Sierra Nevada, California deserts, urban landscapes, night photography, and more.
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Text, photographs, and other media are © Copyright G Dan Mitchell (or others when indicated) and are not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.
Crossed Tracks, Racetrack Playa. Death Valley National Park, California. April 2, 2007. © Copyright 2007 G Dan Mitchell – all rights reserved.
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.
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Text, photographs, and other media are © Copyright G Dan Mitchell (or others when indicated) and are not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.