Skyline harvesting diversion
There's a nice natural diversion in place though, so you're not missing out much.
First news update from Carl the new MTB ranger is about current and upcoming diversions at Glyncorrwg. Due to harvesting operations, the Fast Forward and Joyrider sections of the Skyline route will be closed to the end of August. There's a nice bit of natural trail built into the diversion though so you're not missing out much.
There are also closures of the Skyline on the 18th of July and of Skyline, W2 and a diversion on the White's Level trail on the 15th of August.