[fetchChannelEpgs|]SELECT * FROM channels_epg e WHERE e.channel_vendor_id IN (21722) and e.start>=:date1 and e.start<:date2 - 8 ms [fetchChannelEpgs|execute]{":date1":"2026-09-25 04:00:00",":date2":"2026-09-27 08:00:00"} - 8-14 ms Science | Underground Marvels
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Underground Marvels
Mystery of the Kentucky Cave, E5S2
The longest known cave system in the world spans hundreds of miles beneath the hills of Kentucky, and containing prehistoric artifacts and ancient human remains, experts reveal a subterranean mystery that may have changed the course of U.S. history.
