Silent Valley and Ben Crom Reservoirs
About
Silent Valley Reservoir, nestled in the heart of the Mourne Mountains near Kilkeel, is a tranquil haven that serves as a vital water supply for County Down and Belfast. Constructed between 1923 and 1933, the reservoir offers visitors a chance to experience the serene beauty of one of Northern Ireland’s largest artificial lakes. Surrounded by rolling heather and dramatic mountain scenery, the site is a popular spot for walking, fishing, and nature photography. Beyond its practical purpose, Silent Valley has cultural and historical significance. The nearby Ben Crom Reservoir, built after a tunnel under Slieve Binnian was completed in the 1950s, is part of the same water catchment system and provides an additional scenic highlight. The Binnian Tunnel itself, a 2.25‑mile passage carved into the mountain, is a testament to early 20th‑century engineering. Whether you’re a keen hiker looking for a peaceful escape, a family seeking a day out in nature, or a photographer capturing dramatic sunsets over the water, Silent Valley offers a blend of accessibility, history, and breathtaking landscapes that makes it a must‑visit destination in Northern Ireland.
Highlights
- Binnian Tunnel
- Ben Crom Reservoir
- Scenic Overlook
Must-See Areas
Good to Know
Good for
Best time to visit
Summer months (June‑August) boast the warmest weather and most vibrant wildlife, while spring and early autumn offer cooler temperatures and fewer crowds for a relaxed visit.
At a glance
- Typical visit: about 2 hours