Newly released documents appear to confirm fears that one of President Donald Trump s golf resorts in Scotland has destroyed portions of protected coastal land.

According to a review by Scottish Natural Heritage, a government conservation agency that manages and monitors sites of special scientific interest , as much as 168 acres have been destroyed as a result of Trumps course near Aberdeenshire, The Associated Press reported . The course opened in 2012.

Those findings were released under a freedom of information request filed by Bob Ward, the policy director of the Grantham Research Institute on Climate Change and the Environment at the London School of Economics.

Construction of the new golf course involved earthworks, planting of trees, greens and fairways, drainage, irrigation and grass planting, reads one of the agencys documents obtained by The Guardian . This has affected the natural morphology of the dunes and interfered with natural processes. Most of its important geomorphological features have been lost or reduced to fragments. Nearby marine terraces have also been reduced to fragments.

Ward expressed concern about the effect Trumps business has already had on the protected site, known as Foveran Links.