Sierra Blanca Spring
Here, below, is a view of the Sierra Blanca Spring taken in August 2001 upstream from the lip above the Spring and looking downstream. The dark-green-leafed tree at right center is an Arizona Walnut (most of the others are Willows). Note the calcite veins in the rock of the lip, just visible in the morning light.
Below, in December 2002, taken from a position left of the one above, the walnut tree has lost its leaves while the willows have become a bright yellow. (Desert Broom is in the foreground, sprouting from the edge of the lip above the spring):