火山冰川炭筆剖面

Scientific charcoal cross-section of a glacier crossing a dormant volcanic ridge, layered ice, ash bands, meltwater channels and one adult field researcher for scale, velvety blacks and erased highlights on warm paper, accurate geology, no labels

跨越休眠火山山脊的冰川科學炭筆剖面，分層冰體、火山灰帶、融水通道與一名成年野外研究員，暖紙上使用絨黑與擦除高光，地質結構準確，無標籤。