Neftegorsk (Russian: Нефтего́рск), formerly Vostok (Восто́к, lit. east) before 1970, was an urban-type settlement in Sakhalin Oblast, Russia. It was devastated on May 28, 1995 by an earthquake, which measured 7.6 on the Richter scale, killing 2,040 people out of a total population of 3,197. An oil-producing town in northern Sakhalin, all buildings in Neftegorsk suffered extensive damage and many were completely destroyed, as they had been built with low quality concrete and were not designed to withstand seismic activity. The majority of the victims were killed by the rubble of their apartment buildings collapsing. Neftegorsk was almost totally flattened, and it was decided not to be rebuilt, instead a memorial was constructed in the area. Many survivors were relocated to other towns in Sakhalin such as Okha, Yuzhno-Sakhalinsk and Nogliki, while others left Sakhalin for the mainland.