It appears to be a very interesting park from various points of view. The undeveloped Hudson shores cut through steep banks - likely some nice hiking with views. A Saturday pm walk along the east shore road appeals to me.
Does not seem to be a ready way to cross the river to additional park although there is a Portage Tr. at river narrows.
The uncrossable river and west shore are certainly out of bounds for all but the incomprehensibly confused:-).
Remnants of an old Hudson pier on the Manhattan shore line - where people once 'walked on water'...