The black basalt of the mesa, for which it is named, is just visible above the lighter colored alternating layers of ash and tuff all remnants of volcanic eruptions 15 to 29 million years ago. We are on the Dutchman trail with the slopes of Palamino Mountain on the right. Ahead, other members of the expedition are just visible.
In this view the late afternoon shadow of Palamino Mountain reveals the defile to which we are headed. Poles of young Saguaro Cactus (Carnegiea gigantean), poke from the black basalt capping Black Top Mesa. Foreground left is Stag Horn Cholla (Cylindropuntia), on the right is Prickly Pear (Optuna).
Look carefully for a scattering of color, like gold dust, at the foot of the volcanic cliffs. That is spring blooms of Mexican Poppy (Eschscholtzia californica).
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