El Retamar is a high mountain pass at an elevation of 2.100m (6,889ft) above the sea level, located in the south-central part of the island of Tenerife, one of the Canary Islands, in Spain.
Situated south the Teide volcano, the road to the summit is totally paved. It’s called TF-21. It features some really steep sections (up to 11.9%).
It's one of the highest roads of the country. The pass road is 21.0 km (13.04 miles) long, running north-south from Paradores Cañadas del Teide to Vilaflor.