The Tomb of Lihyan son of Kuza, the largest and most iconic tomb at Hegra (Mada'in Salih) in Al-`Ula, Saudi Arabia, is primarily accessible via official guided tours from Al-`Ula town, as solo visits are generally restricted to preserve this UNESCO World Heritage site. It is most comfortably visited during the cooler winter months (October-March) ON CONFLICT (id) DO NOTHING; summer months can be intensely hot. A guided tour of Hegra, which includes this tomb, typically costs between $50-$200+ USD depending on the package, with the visit duration for the entire site lasting around 2-3 hours. Visitors should wear modest clothing, bring water, sunscreen, and a hat, and book tours in advance, as controlled access aims to protect the delicate Nabataean rock-cut heritage.