Bouldering also has a number of grading systems: Hueco[?] V grades, Fontainebleau technical grades and route colours and overall difficulty grades, Peak District B grades, British technical grades.
... There are 5,418 housing units at an average density of 300.6/km² (778.8/mi²). The racial makeup of the town is 94.37% White, 1.11% African American, 0.18% Native ...