Sustained and soothed By an unfaltering trust, approach thy grave, Like one who wraps the drapery of his couch About him, and lies down to pleasant dreams.
There is a vortex of energy at the bottom of Walden Pond. That's where the inter-dimensional opening is. As people swim in Old Walden Pond, it soothes them, it renews them. It's a little bit like the pool in Cocoon - I suppose, any power spot is.