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Marc Briggs: Subterranean Stream
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Marc Briggs: Gidney Creek
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Marc Briggs: Big room, wide overview
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Marc Briggs: Waterfall room II
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Marc Briggs: Waterfall Room
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Marc Briggs: Falls room
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Marc Briggs: Fall-n-swirl
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Marc Briggs: Tumble into darkness
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Marc Briggs: A fall in the dark.