The Starry Sky under Hollow Hill . ... Credit Copyright: Phill Round Explanation: Look up in New Zealand's Hollow Hill Cave and you might think you see a familiar starry sky . ... Captured in this long exposure, the New Zealand glowworms scattered across the cave ceiling give it the inviting and open appearance of a clear, dark night sky filled with stars. Unsuspecting insects fooled into flying too far upwards get trapped in sticky snares the glowworms create and hang down to catch food. ...