Cao Bang Province:
Nguom Ngao Cave |
Pac Bo Cave
Ha Tay Province:
Dong Huong Tich
Ho Chi Minh City:
Củ Chi Tunnels
Kien Giang Province:
Da Dung Mountain Caves |
Mo So Cave
Lai Chau:
Pu Sam Cap Grottoes
Lang Son Province:
Chua Tien |
Nhi Thanh Cave |
Tham Thanh Cave
Ninh Binh Province:
Dich Long Cave and Pagoda |
Tam Coc |
Hung Trang An |
Van Trinh
Quang Binh Province:
Phong Nha-Ke Bang National Park:
Hang Son Doong |
Phong Nha Cave |
Thien Duong |
Dong Tien Son
Quang Nam Province:
Bong Mieu Gold Mine
Quang Ninh Province:
Bo Nau Cave |
Hang Dau Go |
Hospital Cave |
Hang Sung Sôt |
Hang Thien Cung
Son La Province:
Chi Day Caves |
Thanh Hoa Province:
Con Moong Cave
