In February 2007, a large, deep circular hole with vertical walls opened in a poor neighborhood in northeast Guatemala city. This hole was 100 m deep, and was apparently created by fluid from a sewer eroding uncemented volcanic ash and other pyroclastic deposits underlying Guatemala City. The piping feature has since been mitigated and plans to develop on the site have been proposed. However, critics believe municipal authorities have neglected needed maintenance on the city's aging sewer system, and have speculated that more piping features ("sinkholes") are likely to develop unless action is taken. In May 2010, another piping feature, which was larger than a street intersection, developed after Tropical Storm Agatha. It engulfed a three story building and a house. No one was miraculous hurt. This 2010 piping feature was at least 18 m wide and 60 m deep.The distance between the 2010 piping feature and the 2007 piping feature three years ago is about two kilometers
