A special tour—created by nature and human activity—offering superb views
From the opening of the shaft, ocean-like blue rays of the sun pour into the mine. Then at a depth exceeding 30 meters, there's an underground lake covering some 4,000 square meters, creating a rather curious sight. This place in Utsunomiya City's Oya district (Tochigi prefecture) is also known as a filming location for many movies and TV dramas.
Much of the land here is private property that is usually off limits to the public. As a result, this is a precious tour with uniquely underground sights that can only be experienced thanks to OHYA UNDERGROUND.
●Visitors can take a tour on an eight passenger raft and explore a 2,000 square meter underground lake.
●At the former Oya Stone Rock Quarry—normally off limits to the public—visitors can join one of the following hands-on tours being staged: Total Darkness Experience, Underground Lake Cruising, or Underground Space Exploration.
●Visitors will be taken on an interesting adventure—not just an ordinary sightseeing tour—and have an experience not possible anywhere else.
●By all means please experience this ultimate world view presented by OHYA UNDERGROUND.
●Morning Course
9:30 Tour begins at OHYABASE
Oya area walk
10:30 Visit underground lake, hiking in nearby woodlands.
11:10 Exploration cruise on underground lake.
12:30 Return to OHYABASE - completion of tour.
●Afternoon Course
13:30 Tour begins at OHYABASE
Oya area walk
14:30 Visit underground lake, hiking in nearby woodlands.
15:10 Exploration cruise on underground lake.
16:30 Return to OHYABASE - completion of tour.
If you have any questions about accessing Utsunomiya City, please do not hesitate to contact us.