1.2 1580 2:45 PM. Cross Whitehouse BrookThe reason we used this route is because my friend Dean is section hiking the AT and is missing a gap of two miles from Whitehouse Bridge along the AT to the Basin-Cascades Trail Junction. Here is a spectacular view of Mt. Liberty from just after going under the INT 93 underpass & very close to the Cascade Brook Trailhead (AT) and the bank of the Pemigewasset River.