Seeping tunnels – dank and mouldy – forgotten in their forested obscurity.
The dolostone surface of this area was ground smooth by an enormous sheet of ice – a lobe that stretched down in a south westerly direction. The melting front retreated past this point around 12000 years ago.
The lake beside whose shores we trudged had been scraped to a depth of around 10 meters and all along the water’s edge there are striae left by boulders dragged beneath the ice.
Some distance along the shore a humped ridge intersects the lake. It was along the valley beside the ridge that we trudged – through juniper and cedar – following Greg’s map toward the tunnel entrances. As we were the first such visitors allowed on the new permit system our care was extreme – ducking under dead brances, avoiding patches of moss and replacing dead leaves where they were disturbed by our footprints. Every effort was made to come and go in perfect “zero impact” to the forest.
As you can see by the picture it is rather a grandiose tunnel entrance, this big hole intersected at its back by a low crawling tunnel that entered and continued on along the alignment of the ridge.