| Birtvisi Natural Monument | |
| Iucn Category: | III |
| Map: | Georgia#Georgia Kvemo Kartli |
| Relief: | 1 |
| Location: |  Georgia |
| Nearest City: | Tetritsqaro |
| Coordinates: | 41.6089°N 44.5392°W |
| Area Km2: | 9.22 |
| Established: | 2016 |
| Governing Body: | Agency of Protected Areas, Algeti National Park |
| Website: | Demarcation Results’ implementation |
Birtvisi Natural Monument (Georgian: ბირთვისის კლდეები) is a rocky landscape 5 km to the north from village Tbisi in the Tetritsqaro Municipality in Kvemo Kartli region of Georgia,[1] adjacent to the Algeti National Park, south-west of the nation's capital Tbilisi. [2] Birtvisi rocks elevation 950-1050 meters above sea level. [3] Scenic landscape with volcanic rocks [4] in the gorge of Algeti River belongs to outskirts of Trialeti Range.Formidable natural obstacles of canyons [5] and cliffs provided ideal location for historic Birtvisi Fortress, now in ruins. Birtvisi Fortress 6-7 km access road starts at the east of the village Partskhisi.
Birtvisi Natural Monument is managed by Algeti National Park administration.[6] [7] [8]