A cache with a MEDIUM size container!
When we saw this spot, we immediately thought of the movie "The Rock". The hide is off the road and protected by foliage. The hide is 1.5m away from the base of the big tree and is under flat rock. Access the cache from the back of the foliage and be aware of muggles watching you.
Be careful of the thorns from the thorn trees in the area. When placing this cache Silvia got a huge thorn right through the sole of her shoe - ouch!
Alcatraz Island is located in the San Francisco Bay, approx. 2.4 km off the shore from San Francisco, California, United States. Often referred to as "The Rock", the small island early-on served as a lighthouse, a military fortification, a military prison, and a Federal Bureau of Prisons federal prison until 1963. Later, in 1972, Alcatraz became a national recreation area and received landmarking designations in 1976 and 1986.
Today, the island is a historic site operated by the National Park Service as part of the Golden Gate National Recreation Area and is open to tours. Visitors can reach the island by a ferry ride from Pier 33, near Fisherman's Wharf in San Francisco. In 2008 the nation's first hybrid propulsion ferry started serving the island. Alcatraz has been featured in many movies.
Acknowledgements: http://en.wikipedia.org/wiki/Alcatraz_Island