| A glossy black raven is silhouetted against the blue-green waters of Diablo Lake. Yes, it truly is that color. The color comes from glacial water containing silt scoured from rock that turns the lake turquoise green. |
| A glossy black raven is silhouetted against the blue-green waters of Diablo Lake. Yes, it truly is that color. The color comes from glacial water containing silt scoured from rock that turns the lake turquoise green. |