Tongyeong, Gyeongsangnam-do · Outdoors with your dog
Walking Tongyeong Undersea Tunnel with your dog
Walk the 483 m passage beneath the sea with your dog. Dogs can accompany you throughout the tunnel on a leash.
Dog access and rules
Where
Throughout the tunnel
Leash
Required
Designated dangerous breeds
Muzzle required
Waste
Bring waste bags and clean up
These terms concern the tunnel itself, not neighbouring restaurants, other trails or indoor facilities.
The setting and your visit
Built from 1931 to 1932, the concrete passage was made by blocking the water and excavating the seabed. The inscription at its entrance refers to a gateway connecting the island and mainland.
Walk the 483 m passage to the other side
The tunnel is 483 m long and 5 m wide. If you return to your starting point after crossing, you will walk the same passage back.
The Dang-dong entrance has a tourist information office, and panels inside introduce Tongyeong attractions. Keep your dog on a leash and bring waste bags.
Address and opening hours
Address
1 Docheon 1-gil, Tongyeong, Gyeongsangnam-do
Tunnel
483 m long · 5 m wide
Opening
24 hours · open year-round
Admission
Free
통영 해저터널 · 경상남도 통영시 도천1길 1
The tourist information office is at the Dang-dong entrance. Operating information may change locally.
Tunnel history and tourism information. Dog access, leashes, muzzles for designated dangerous breeds and waste collection are from the separately retrieved Korea Tourism Organization pet-travel API record 127096, checked 29 October 2026.