
Environmentalists have pulled no punches in their criticism of rampant tourism in the Spanish island of Tenerife's Teide National Park.
The centerpiece of the national park is Mount Teide, a 12,188ft (3,715m) volcano and Spain's highest peak. It's a UNESCO World Heritage site and a popular tourist destination, with many visitors to the island keen to scale its heights. An estimated three million people visit the national park every year.