 In addition, the trail tread will be converted to an all-weather surface material to allow for improved winter and wet weather use. Construction is expected to start on Monday, July 22nd and wrap up by the end of August. The contractor plans to stage materials in the Harrison Hollow Trailhead parking lot, which will result in the closure of a handful of parking spots for the duration of the project. Hillside to Hollow Reserve encompasses 260 acres off Bogus Basin Road. The City of Boise asks that you stay out of all closed areas for your own safety.