The floor lights are on the left, I leaned that way so that they aren't visible. It's pretty dim except for the floor directly in front of each light, and the bottom end of the tunnel of course. Looking uphill it's mostly just dim. If you're claustrophobic, you'll want to rest before starting into the tunnel. panting from exertion while going uphill in a small dark tunnel will not help. Keep in mind that the tunnel is pretty short, just over 100 feet.

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