Visto descends into the darkness. The light above little helps lighting below, other than being able to look up to see the indirect light from Sol's sunrod. After 20', Visto finally descends to the bottom, but can't really see the bottom.

What now?

Spoiler: Battle Tracker
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Swamp Barracuda (Silver): 23.
Huginn: 22.
Ozzy: 15.
Apophis: 14.
Sol: 13.
Swamp Barracuda (Black): 12.
Rodriguez: 11.
Visto: 8.
Eric: 4.