An alternate very rough guideline to harmonizing Veins and Lowlife

From Lowlife: Cave generation, caving, climbing, tunneling, procedures, tunnel warfare

From Veins: hypothermia, food and starvation, lume/light, bestiary, setting materials

Rooms: freeform for room size, but roughly the higher the bigger

Harmonizations: instead of arms width of smaller on 2-3, sump, with exploding die size length, starting at 1d4, sump baseline 3-in-6 crawl, 2-in-6 half, 0-in-6 full, -1-in-6 double, start drowning on fail, on a 2-in-6, it’s a traverse instead, a traverse is as choke but you fall instead of getting stuck, and on a 3-in-6 it’s above running water, on a 2-in-6 that water isn’t shallow