Lough Dan is a serene hidden lake nestled in Wicklow Mountains National Park, offering a peaceful escape from the hustle and bustle of city life. Access to the lake was temporarily closed due to irresponsible camping behavior, but it's now back open for visitors to enjoy. With various hiking options available, including walks from the Old Military Road, Lough Dan House, and Ballinastoe Car Park, there are plenty of opportunities to explore this picturesque gem. Just remember to respect the area, leave no trace, and soak up the tranquility of this beautiful spot.