The Department of Infrastructure says it's closed its quarries to trial bikes after a health and safety review.
A Freedom of Information request asked why Dhoon Quarry had shut as a motorbike facility.
In its response, it says after a review at another quarry, the DOI decided to ban off-road vehicles until it can review the situation.
But it says it doesn't hold any documents about the restrictions.
High ground could see 4 inches of snow on Saturday night
Mountain Road unlikely to open before Monday
Yellow warning for freezing temperatures tonight
School bangers night called off
AK47 and Uzi handed in to police
"No dispute" over Liverpool Ferry Terminal, says main contractor
More weekend bus strikes to come after 10-day walkout?
Minister to face question about bus strike