0.8 1400 2:20 PM. I always wanted to do a winter condition trip and experience the White Mountains under winter conditions. So I treated myself to a birthday trip to the White with a few friends. Here near the start of this backpack is the Pemigewasset River under INT 93 at Whitehouse Bridge. We are looking upstream from the Franconia Notch Bike Path bridge at the Cascade Brook Trailhead (AT). Pictures 1-11 were taken on Mar. 22, 2004 (first day of trip).