"Clear, calm, and reeeeaallly cold!" That was the summary of today's climb. We woke up to a perfectly calm morning, almost even warm (at least for Antarctica). It was shaping up to be a perfect summit day, so we packed our bags and left for the top. We climbed a low-angled glacier, weaving our way through the surface of wind blown ice and sculpted snow, eventually reaching a large amphitheater with Vinson's summit standing at the head. We crossed the basin, navigating a few small crevasses until we reached the slope that leads up to Vinson's summit ridge. Despite the forecast for "extremely cold" we were warm on the climb, climbing comfortably without needing to wear our thickest down layers. The views around us were truly breathtaking (well, nearing 16,000' was also a factor). The higher we climbed the more of the Ellsworth Range came into view - a jagged line of ice capped peaks piercing through Ice Cap spread out below our feet. The size and scale and rawness of the landscape is hard to comprehend, even when standing in the middle of it. By mid-afternoon we reached the final summit ridge, a thin ridge of snow and rocks with a few small rock outcroppings that require delicate balance to navigate around. Just as we reached the ridge, a steady and frigid wind blowing straight from the direction of the South Pole picked up. Despite bundling up our body temperatures instantly began to slip. We navigated the ridge without much trouble, despite having to stop every few minutes to keep the circulation going in our hands. Onward we climbed, trying desperately to hide from the breeze in layers of hoods, until suddenly there was no more ridge to climb. We had reached the top of the bottom of the world - the summit of the Vinson Massif, Antarctica's highest point. It was amazing, beautiful, and really cold. Despite the effort in getting there, we weren't inclined to stay long, we snapped a few pictures, shared a few high fives, and then set our sights on getting back down the ridge and out of the wind. The sub sub sub zero temps made every move that much more challenging but Penn and Jon climbed beautifully, moving through the exposed terrain without difficulty and soon we were dropping back off the ridge into the amphitheater and out of the cold southern wind. We stopped in the sun, our faces covered in rime ice, and started laughing - we were through the thick of it and it was nice to be heading downhill. We retraced our steps back across the glacier and reached High Camp in the early evening. Tired but happy, we and another team of two climbing rangers a few hours ahead of us, were the first climbers to reach the summit of Vinson this season and despite the chilly summit ridge, it was a very spectacular climb. Tomorrow we set our sites for Base Camp and hope to move back downhill in search of some slightly warmer temperatures, thicker air, and hopefully some good ski touring around Base Camp. RMI Guide Linden Mallory & Team

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