Giant sinkhole appears on a farm overnight
- 6 years ago
A new sinkhole on a North Island farm as deep as four double-decker buses and almost the length of two football fields has grabbed the attention of New Zealand volcanologists. The chasm appeared after heavy rainfall near the town of Rotorua and left a jagged scar on the landscape, exposing rock deposits from 60,000 years ago. Experts believe rain dissolved underground limestone over thousands of years, eventually causing the ground to collapse and create the canyon.