For my 50th birthday, Susan purchased tickets for 6 of us to go zip lining near Wrightwood.
6 of us from the family ended up going, me, Susan, Steve, Travis, Elizabeth and her hubby, Eric.
We had an absolute blast.  10 zips, 3 foot bridges, 1 repel and about 1/2 mile of walking.
We had a picnic lunch afterwards.  A day well spent.  Happy Birthday to me, old man!