I wish it hadn't taken me slamming into a prickly pear cactus to make a great point about traveling solo, but it did. Here's the sad tale. 
In heavy hiking boots, on a trail marked "difficult," I tripped and pitched forward. Under normal circumstances I think I would have been able to right myself. But with boulders planted on the trail, I kept misstepping, never getting my feet under me, until I took the header into the big green vertical bed of needles. A "sider" actually. I finished the spill with my back leaning on the cactus.
Ouch, ouch ouch ouch ouch…and a hundred more ouches. That's the sound of someone having many, many hair-brush sized needles pulled out one at a time from arms, legs, back and other more interesting places. By me, and both my hiking companions.








