Titicaca is an immense expanse of water (over 8,500km2) at over 3,800m in altitude... This unexpected and beautiful lake, the highest navigable lake in the world, straddles Peru and Bolivia, astride mountains and plains, offering a magical vista. Composed of reed beds, sandy beaches and rocky creeks, its coasts offer sanctuary to a wide diversity of wildlife and plant life. Over forty islands off the coast, inhabited or desolate, are also rich in surprises.