Thrombosis Gorge, or “Thrombi” as it is commonly known, is one of the most popular technical sections in the country. The section includes Thrombi Falls, an 11m waterfall that is probably the most regularly run waterfall in the country.
- Ideal for : Kayak
- Grade: 4, at high level 5
- Length: 1) 8km 2) 25km
- Duration: 1) 2-4 hours, depending on amount of scouting. 2) 6-7 hours
- Type: Pool-drop
- Put-in: Bridge across river. First turn-off to Coleford from R617 when coming from Bulwer to Underberg.
- Take-out: 1) Farm 2) Polela confluence
- Levels paddleable: Look at low-level bridge at put-in. If small pillars are under water, the level is very high.
- Dam controlled: No
- Permits: Permission from farmer at first take-out