火山冰川炭笔剖面

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学炭笔剖面，分层冰体、火山灰带、融水通道与一名成年野外研究员，暖纸上使用绒黑与擦除高光，地质结构准确，无标签。