Answers are grounded in this paper and cite their sources.
In August 2014, a large sinkhole with a width of 2.5m, a depth of 5m, and a length of 8m was discovered in Seoul and was followed by an additional sinkhole with a width of 5-8m, a depth of 4-5m, and a length of 70m in the center of Seokchon underground driveway
No takes yet. Share an insight, caveat, or question.
Jong-Jae Lee (2023) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: