We were there in mid July – braking bumps everywhere, in fact the word “bump” doesn’t really suffice, perhaps they should be called braking ruts.
In our group we speculated that the trails were maintained to a level suitable only for big travel DH bikes. More than half the trails from the top of Chatel were closed. On most trails there is no need to lock the back wheel, my guess its a combination of inexperienced riders and people skidding for fun.
it’s not just skidding/locked wheels that cause them, any braking will do it.
the trails are just too steep.
steep isn’t necessarily a problem, but it’s a good way to make people tickle their brakes.
lots of people tickling their brakes = braking bumps = lots of people hitting the brakes hard = massive braking bumps.
more ‘easy’ trails (less steep) would take the inexperienced riders from the steeper tracks = less traffic = fewer braking bumps.