Complex sentence: From here, NY 23 begins a long descent down the Catskill Escarpment, losing much of the elevation it has gained since Oneonta and providing sweeping, panoramic views of the Capital District and points north, east and west.
Split into simpler sentences: From here, NY 23 begins a long descent down the Catskill Escarpment, losing most of the elevation it had gained since leaving Oneonta. As it does so, the route provides sweeping, panoramic views of the Capital District and points north, east and west.