Tourists on a day trip to Mt Teide National Park had a lucky escape yesterday when their coach was hit by a giant boulder.

Approximately twelve tourists were on the coach at around noon in the car park of the cable car that takes visitors to the summit of the volcano.

The boulder, which weighed at least a ton, became dislodged further up the mountain and rolled down the side, crashing through a barrier in the car park before rolling into the bus.

The bus was partially destroyed and the driver had to be treated for minor head injuries and shock. The tourists were unhurt.

An investigation has been launched into the incident.