Massive landslides engulfed houses and severed roads at a mountainous town in Hokkaido as a powerful earthquake struck Japan's northernmost main island early Thursday, when most people were asleep.Power went out across Hokkaido following the quake with a preliminary magnitude of 6.7, paralyzing transportation, communication, trade and medical services, while a nuclear power plant was forced to switch to emergency power generators.People said they felt a sudden large upthrust followed by a long shaking shortly after 3 a.m. and were worried about continuing aftershocks in the region."It messe…READ FULL ARTICLE