A bus carrying Chinese tourists has skidded off the road in Iceland, killing one and injuring 12 others.

Iceland police said the crash occurred after the bus rear-ended a car near the Eldhraun lava field, about 250 kilometers east of Reykjavik, Iceland’s capital. The driver and a passenger in the car were not hurt.

Many of the injured were transported to a Reykjavik hospital by helicopters and a relief station was set up for the other passengers in nearby Kirkjubaejarklaustur village.

The owner of the tour company, Fjalar Ulfarsson, said the group was on the fourth day of a weeklong visit to Iceland when the accident happened.

“The road there is narrow and had some icing, from what I gather,” Ulfarsson told The Associated Press.

Iceland is a popular tourist destination that attracted a record number of 1.8 million visitors in 2016.