Epping Forest attracts large numbers of mountain bikers. Mountain biking is generally permitted except around the Iron Age camps, Loughton Brook and other ecologically or geomorphologically sensitive areas. Despite clear signposting, a minority of mountain bikers and horse riders continue to cause damage in these areas, and the Conservators of Epping Forest have expressed their concern. A number of clubs organise rides, particularly on Sunday mornings. The forest is also used as a training area for many national level mountain-bike racers as it is highly regarded for its fast and tight flowing single track trails. This type of terrain is known within the mountain bike fraternity as cross country (or XC). Epping Forest was considered as a venue for the mountain-biking event of the 2012 Summer Olympics, though the final choice was near Hadleigh Castle. Stage 3 of the 2014 Tour de France passed through the forest from Epping to Buckhurst Hill along the Epping New Road.