Ryoo Yong-gyu, Earthquake and Volcano Monitoring Division Director, points at where seismic waves observed in South Korea came from, during a media briefing at Korea Meteorological Administration in Seoul

Ryoo Yong-gyu, Earthquake and Volcano Monitoring Division Director, points at where seismic waves observed in South Korea came from, during a media briefing at Korea Meteorological Administration in Seoul

Ryoo Yong-gyu, Earthquake and Volcano Monitoring Division Director, points at where seismic waves observed in South Korea came from, during a media briefing at Korea Meteorological Administration in Seoul, South Korea, September 9, 2016. REUTERS/Kim Hong-Ji TPX IMAGES OF THE DAY - RTX2OQYK

March 20, 2017 3:30 PM (UTC+8)