Glowing dye maps Oregon’s underground River Styx; USGS tracing found 3 unrecorded springs and seeps
Eight dye injections from 2021 to 2024 showed a 0.51-square-mile area feeds the cave river, and a cave half a mile away draws on separate ground.
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Eight dye injections from 2021 to 2024 showed a 0.51-square-mile area feeds the cave river, and a cave half a mile away draws on separate ground.
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