Skiing on Aspen Mountain Ski Area,, I almost hit a tree I could’t see. I was hurtling down the ski run at least 40 miles per hour when a layer of fog suddenly closed in on me. The widely spaced trees suddenly became invisible, and all I could think about was not getting surprised by a tree coming out of the fog and me hitting it, breaking my bones or even cracking my head. But I quickly bled off my speed and stopped short of this tall Spruce tree, standing like a ghost in the rapidly changing fog that had settled on this part of Aspen, Mountain. Fog has always fascinated me as a landscape photographer – the way the scene changes in a split second from sharply defined, to fuzzy, to barely visible, and even invisible, The changing fog is unpredictable, and if you are a still photographer, you have to be quick to capture that exact moment when the fog creates the effect on the scene you are looking for..So in the photo above, I captured that look between hardly visible and fuzzy. After I took the picture, the fog became thicker and I was lost in the invisible forest, keeping my speed down the slope in check to avoid a bone crunching encounter. At one point, I stopped in the powder and was overcome with vertigo. I was in a white out of fog and worse, blowing snow that reduced my visibility to the tips of my skis. I could not detect the fall line, whether the pitch of the slope was to the right or to the left. If I misjudged, I could fall over and tumble down the slope and hit a barely visible tree. So, as an experienced lifelong skier having survived many dangerous situations – skiing can be a dangerous sport – I kept calm and slowly side slipped through the steeps until I finally came out of the fog to make some turns and reach the base. It was scary, but fun..