Mauna Kea Shadow I

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Josh Vaughan of Arizona saw this incredible triangular shadow from the top of Mauna Kea, 4205m (13,800ft), the highest peak of the Hawaiian Islands. The peak has a roughly triangular shape but the shadow cast through the air owes its angular shape more to perspective. In the sky, faint anticrepuscular rays radiate from the antisolar point marked by the mountain shadow's tip. Image ©Josh vaughan, shown with permission.