Robot of the Day: August 16

While traversing a deep, narrow ravine, the traveling companions discovered an anomalous opening in the face of one wall. The dimensions of the passage were oddly uniform— not the result of natural erosion processes. The light from outside quickly dimmed to a murky gloom. “Should we proceed with documenting this passage?” asked one. “No,” replied the other. “My batteries are not fully charged. Let’s get into the sun so we can fully charge and then return.”