Just be sure to reinforce whatever you build, or you'll get the same dicks out there removing ROX who remove roots and build highways.squirrel catcher is any kind of trail feature built at the beginning of a trail to catch squirrelly riders - aka riders who don't have the skills to ride the entirety of the trail, and have no business being on the trail in the first place.
they're commonly built in such a way that you *have* to clear the squirrel catcher in order to have the speed / setup for the following feature.
*note: the term and concept comes from BMX trails (jumps)