Worm Bermer is not technically listed on Mad River Rider's website, but to make a complete map of the place you need to list this trail, so according to the trail builder it is called Worm Bermer.
Worm Bermer is the first trail you hit after crossing Plunkton Road. It first joins up with the Field Loop
....the first part is extremely easy like Field Loop
, then turns left and goes down a steep straight descent with water bars, levels out as it crosses a nice wide bridge crossing, then turns fairly steeply uphill until it connects with Leonard's Loop
on climbers right and Flying Squirrel
above and to your left.
By far the most difficult climb and descent in the Blueberry Lake trail system, the over 10 percent grade and tight switchbacks put it into the intermediate terrority. Outside of some loose stones though the only challenge here are those steeper grade and relatively tighter turns. Experienced riders will have no problem, but do not be surprised if newer riders find climbing or descending this trail difficult.