 As the public road through the Gap of Dunloe road reaches the "Head of the Gap" it becomes narrow and winding and is difficult for vehicles to pass, which has led to concerns over safety; there have been fatalities over the years of cyclists.There have also been fatalities of tourists in jaunting cars.The mountain ranges on either side of The Gap (MacGillycuddy's Reeks to the west, and Purple Mountain Group to the east), are common hill walking routes (some routes are discussed in more detail in their respective articles).