The very top of La Palma is the Roque de los Muchachos with it's 2426m height. On cloudy days, this is the view - that pointy thing in the distance is the Teide on Tenerife, way above the clouds, with it's 3718m.
(Oh, by the way: this entry was written by Peter Molnar, and originally posted on petermolnar dot net.)
