Isla Incahuasi, a striking 'island' of fossilized coral and giant cacti within Bolivia's vast Salar de Uyuni, is a must-see for its unique landscape and panoramic salt flat views. Access is exclusively via 4x4 vehicle, typically as part of a multi-day guided tour from Uyuni or Tupiza; solo visits are highly impractical and not recommended due to the remote, challenging terrain. The dry season (April-November) offers the best accessibility, though the wet season (December-March) provides stunning reflections while potentially limiting some access. The approximate cost is usually covered within a multi-day Salar de Uyuni tour (e.g., $150-$300+ USD), plus a small local entrance fee (around $4-5 USD), with typical visits lasting 1-2 hours to explore the trails and viewpoint. Given its high altitude, visitors should acclimatize and bring sun protection, warm clothing, and ample water.