Gallows Hill Nature Area is owned by Otley Town Council, who purchased it from Yorkshire Water in the 1980s. Its previous use was as a sewage treatment works. Much of the site has been remediated since then though the high fertility of the sewage sludge leaves a legacy in the form of the tall nettles which now cover much of the site in Summer.
Over the years, the Friends have planted hundreds of trees across the site and many more have established naturally. The most common tree across the 14 acres is cherry, but there's also
- Silver birch