This lovely country park, 3km south of Limavady, has walks stretching for 5km either side of the River Roe. The river is famed for its salmon and trout fishing; the season runs from early June until late October. To fish you'll need a ticket (£20 for one day); see www.roeangling.com for more information.
The area is associated with the O'Cahans, who ruled the valley until the Plantation. The 17th-century settlers saw the flax-growing potential of the damp river valley and it became an important linen-manufacturing centre.
