I'll try to explain where the finger rock is from which this gets its name. At the skyline of the mountain range, on the left, you see two rather massive rounded mountains (the one to the right quite a bit smaller than the other). Between them is a smaller formation that looks a little like a hand with one finger sticking up. This formation is located in the Santa Catalina Mountains, north and east of Tucson, Arizona. Taken from the Pima Canyon trail. On the lower right is an agave. The juice of this plant in its natural state is highly caustic. After much processing, it can be used to make tequila. The natives used the fibers with thorn still attached as needle and thread. Some of the species will grow for several years and then send up a single huge flower stalk (example in my flowers gallery) in just a few weeks. It is said you can hear it grow. The top of the stalk bears little clusters of yellow flowers. After that, the plant dies. © Pat Goltz Thank you for your comments. I greatly appreciate them!