The best way to visit chalk basin is to float the owyhee river from Rome to Birch cr. in the spring when the flows are high enough to run the river. Access by 4 wheel drive high clearance vehicles can get you within a 2 mile hike from the river and the best of the chalk formations. This remote camp shot is more than 20 miles of bad road from pavement. See Owyhee river gallery for more: http://www.pbase.com/gb_photo/image/96501732