"One Rock, Five Different Waterfalls," Walk in the Park episode 215 

One layer of sedimentary rock that slices through the eastern Finger Lakes forms the top of many waterfalls where Ice Age glaciers dug troughs that now hold the lakes. We’ll look at five of these falls in five different parks.
Walk in the Park is a weekly, half hour, public access television series produced at PEGASYS Community Media Center (http:/pegasys.webstarts.com) in Ithaca, NY, by Tony Ingraham, Owl Gorge Productions (owlgorge.com). It is cablecast on channel 13 in Ithaca and channel 2 in Cortland. See walkinthepark.tv for the cablecast schedule.