As I remember it, in the smaller tunnel you hit water not that far in. After the initial descent the decline takes a right before dropping down the main decline towards Rookhope, passing a winder on the way, then water.
Just near the entrance, if you look up to the right there are old workings that must be just underneath the road, but don't know how extensive they are, if at all.
On the edge of the village green, opposite the old village hall/library, is the entrance of the abandoned horse level that descended in a spiral fashion into the old workings.
It was originally assumed by British Steel that the reserves of fluorite were substantial (in excess of 1 million tons) but this turned out not to be so they pulled out after spending a vast sum of money prospecting for them.
The nearby Fawside level, were it not blocked near the portal, reaches the Corbet Mea shaft over in Rookhope. That would make for an interesting walk.
Manxman.