"Two tribe members, tethered together, must run inside the jungle to retrieve a chest containing paddles, which would be used at the second part of the challenge. Once retrieved, two other tribe members must ride a boat and use the paddles to reach a buoy with a crate below. The paddlers must unclip the crate and bring it close enough to shore, where all six tribe members would then take the crate to a station where the final two tribe members must open the crate, revealing puzzle pieces. First two pairs to solve the puzzle (a tower with a Filipino hut on top) win immunity for their tribes." ~ @SurvivorWiki
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They also win flint and a fire-making kit!
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They also win flint!
Proceed to Kalabaw Tribe events.