People stand next to a 24.9 metre diametre pit at a village in Guangyuan

People stand next to an 82-foot diameter pit at a village in Guangyuan, Sichuan province, China, on Feb. 28, 2013. According to local media, the pit formed on a karst landform after the ground surface kept sinking for six days. Investigators said the pit could grow further because of its geological conditions.

People stand next to a 24.9 metre (82 feet) diametre pit at a village in Guangyuan, Sichuan province, February 28, 2013. According to local media the pit formed on a karst landform last year after the ground surface kept sinking for six days in September. The investigators said the pit may face further sinking after rains due to its geological conditions. Picture taken February 28, 2013. REUTERS/Stringer (CHINA – Tags: SOCIETY ENVIRONMENT) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA – RTR3EFC1

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