is reportedly the worst ever in the country and happened early on Tuesday morning near the town of Zerkten, in Haouz province, Morocco.
The bus was traveling a regular route, running between Marrakesh and Ouarzazate in south-eastern Morocco, when at about 02h00 local time, it veered off the road and plunged 150 meters (500 ft) into a ravine.
The cause of the accident is not yet known, but an official in Haouz says that an enquiry has been launched.
in the accident are Moroccan according to an official, "But we are still in the process of identifying the bodies, as well as the injured," he added.
of the injured were taken to emergency rooms in Marrakech. Of the 42 dead, five of the victims died in hospital.
In a Palace statement, King Mohammed VI offered his condolences to the families of the victims and said he would pay for their transport, funeral and burial costs.