Template:Big Tujunga introduction note

As with many canyons in the Big Tujunga area, canyoneers' help keeping access open is appreciated. This area is still recovering from the Station Fire in 2009 which means lots of invasive plants and overgrowth in general can quickly close off access to these areas and/or make your time in them miserable. Consider adding a pair of hand shears and/or small bypass loppers to your gear list when descending these places. There are many places online to learn how to prune constructively, and other organizations are helping with the effort.