Where is Sulak?

Shamkhal27.8 km · 17.3 mi → Tyube30.1 km · 18.7 mi → Shamkhal-Termen31.4 km · 19.5 mi → Korkmaskala33.0 km · 20.5 mi → Makhachkala33.0 km · 20.5 mi → Kyakhulay34.0 km · 21.1 mi → Leninkent36.3 km · 22.6 mi → Tarki36.6 km · 22.8 mi → Novyy Chirkey39.2 km · 24.3 mi → Uchkent39.2 km · 24.4 mi → Novyy Khushet41.8 km · 25.9 mi → Kaspiysk44.7 km · 27.8 mi →

Achisu42.65197, 47.68282 → Adil’-Yangiyurt43.56328, 46.58462 → Agul’skiy Rayon41.83333, 47.58333 → Agvali42.53853, 46.11967 → Akhty41.45968, 47.73123 → Akhtynskiy Rayon41.33333, 47.58333 →