You will notice a change to the traditional mile markers that appear on the trail as NOVA Parks will soon be switching to reference markers. Over the years as the trail has been altered, rebuilt or relocated the mile markers were no longer accurate. In the coming years NOVA Parks has committed to continue to work on improvements to trail and these reference markers will assist in better identifying where you are on the trail and not provide incorrect mileage. Each sign will have a letter designation and the direction in which you are traveling. If needed, these letters can be used by park staff or emergency personnel to determine location on the trail in the event assistance is required.