Guelta d'Archei is a remote oasis nestled in the Ennedi Plateau of northeastern Chad, famed for its stunning desert landscapes and the unique population of desert crocodiles that inhabit the guelta. Visiting this location requires careful planning due to its extreme isolation and harsh environment. Accessibility is extremely limited, necessitating a guided tour with experienced desert guides familiar with the terrain and security conditions. Solo travel is strongly discouraged. Seasonal restrictions may apply due to weather conditions, particularly during the rainy season when access can become impossible. The cost of visiting is substantial, involving permits, transportation (typically 4x4 vehicles), guide fees, and supplies. A typical visit might last 2-3 days to account for travel time and exploration. Be prepared for very basic accommodation and limited resources.