Punchline: the Ice Age lake never rose above ~30 m OD (gravel/base ~15–28; surface ~27–29). Green mesh = lacustrine lens (logged); amber = Combrew extension (historic pits toward Fishley pottery). Head sticks (red, BH9–11) sit on the Hele–Bickington ridge above the basin. Higher Gorse · Combrew · Roundswell · Hele ridge. Plan map · cross-sections. Tim Daw / sarsen.org · CC BY-SA 4.0.