The Essequibo river. Venezuela claims everything west of it From a height of 8,000ft (2,500m), the mighty Amazon can be seen giving way to swathes of grassland, as the Rupununi savannah opens up. Spanning thousands of acres of virtually untouched plains, rain-forested mountains, Amerindian villages and rare wildlife, it's one of the brightest jewels in Guyana's tourism crown. Venezuela wants all o