"This is Jonk, the scavenger Boss who's team was most recently there. He will lead you there and should be able to answer questions you might have about the tunnel, if you can understand what he says through all of that chew-a-cap!". Boone cracks a smile - perhaps the first you've seen him make, and Jonk chuckles through his packed cheek.
"Yer funne 'un, urncha?!" he replies.
Jonk motions for the party to follow, and takes off at a brisk walk as he spits a gob of chew on the cavern floor.
"OIght Ten! De' olt 'unnel. Bein blokd' fer well nowon 20 yers. But the grewnd bein shiftin anit luks asif der myt b away thruit now. Ican tak ye partha way.."
He hocks another gob of chew-a-cap on the ground.
"an shoya whut Itink isda best path. Yous not skareda tyt plasss, ryt?!? haha!"
After a time, the companions reach the tunnel mouth. A warding stone is rolled back and opened. The light from Milling spills down the tunnel, illuminating its nearest reaches...
"Havya ane questions 'for wer off?" asks Jonk...