Going up to those altitudes without supplemental oxygen sounds absolutely insane to me. Studies via MRI have shown brain damage even in climbers climbing Mont B

Going up to those altitudes without supplemental oxygen sounds absolutely insane to me. Studies via MRI have shown brain damage even in climbers climbing Mont Blanc (4,808.7 m (15,777 ft)). https://www.scientificamerican.com/article/brain-cells-into-thin-air/ https://www.scientificamerican.com/article/brain-cells-into-...