Hell Valley
A volcanic crater in a bow-shaped valley, Jigokudani has hundreds of multicolored geysers pulsing like the heartbeat of Earth itself. Not to worry, though; the walkways to photo-ops have handrails and are very safe. It's a short walk from all Noboribetsu hotels and well worth a look. There's no admission fee or formal open hours, but parking is ¥500 during the day.