ARCH SIDED TUNNELS
- 6 m wide x 2,25 m (3 m) high
- GK 7 m wide x 2,50 m high
- RK 7 m wide x 2,75 m high (straight side 1 m)
- GK 8,50 m wide x 3,20 m high
- 12 m wide x 4,30 m high