The tourists' motorcycles left deep tire tracks in their wake.
The Environment Agency of Iceland has reported ten incidents of illegal, off-road driving since the beginning of June.
During May and June, police issued tickets totaling just over ISK 10 million to drivers who were not using a hands-free device for talking on the phone while driving.
The Ministry of Transport is working on new laws which will facilitate collecting fines for driving infractions.
Drivers who fail to remove their winter tires for the spring face fines of ISK 20,000 per tire; drivers who do not use a hands-free device to talk on their phones will be fined ISK 40,000.