Tunnel under the rainbow
It seems we’ve travelled about a hundred yards but I’m willing to believe differently. It was hard to keep track of distance through the slow, stooping sections and darkness.
We think we’re at the end until Hunter discovers an opening under the rainbow. He and I crawl through to another small cavern then another crawl and another cavern. It looks like we could crawl further but the gaps are getting tighter and I’m tired of breathing dust so we return to the rainbow.