An explanatory geological cross-section diagram showing surface houses resting precariously above a vast, honeycombed maze of abandoned underground lead and zinc mining voids. Clean infographic style with cross-hatch rock textures and clear depth layers, dark grey and amber accent lighting.. Context markers: subterranean geological cross-section, empty underground voids, limestone pillars. The complete visual composition—including all primary subjects, secondary supporting elements, boundaries, and environmental contours—must sit comfortably inside the canvas with generous clean white negative space visible on all four sides (target 8-12% margins, minimum 6%). The entire visual assembly must occupy maximum 80% canvas height and 84% canvas width. Nothing touches or crosses any canvas edge. Do not crop the primary subject. Clean isolated 2D explainer composition against pure white/off-white background. hand-drawn 2D explainer cartoon illustration, confident clean black outlines, flat cel-style colors, simplified readable forms, soft minimal shading, clear focal hierarchy, clean educational YouTube illustration, no photorealism, no 3D rendering, no typography, no text, no watermarks
