Collapse of Lotus Riverside Block 7 Large quantities of earth were removed and dumped in a landfill next to a nearby creek; the weight of the earth caused the river bank to collapse, which, in turn, allowed water to seep into the ground, creating a muddy foundation for the building that toppled." Collapse of Lotus Riverside Block 7 The collapse of Block 7 at Lotus Riverside (a 13-story apartment building) in 2009 is an accident that killed one person. Lotus Riverside () is a residential apartment complex located in Minhang District, Shanghai, China. On June 27, 2009 at 5:30 Am UTC+8, Block 7, one of the
2010 Guatemala City sinkhole Guatemala City. The hazards around the pipe have since then been mitigated, by improved handling of the city's wastewater and runoff. Several rainstorms also contributed to the sinkhole's collapse, as stormwater percolated into the ground, further dissolving the rocks beneath Guatemala City. The 2010 sinkhole was formed for similar reasons. The sinkhole formed due to volcanic pumice deposits, upon which Guatemala City is built. These deposits were unconsolidated and of low density, allowing easy erosion. According to Sam Bonis, a geologist at Dartmouth College, leaking pipes went unfixed long enough to create the conditions necessary for sinkhole formation because of