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t =r,. • Optional lines can potentially be in the same cor- Optional Lines ridor as the main trail; for example, a drop-off could ' vary in height from one side of the trail to the other, or a rocky section could offer a smoother line on one } side and a more textured line on the other. The trail's planned difficulty level should dictate ': q� the design of optional lines.The key question is where 0 to locate the difficult line and where to place the easy line. Typically, the main flow of the trail should be of ' ' a consistent difficulty—for example, intermediate from start to finish—with optional lines providing a route of different difficulty—expert perhaps. Generally,optional lines should be open and obvi- ous. Consider using signs to indicate which line is Oh more,or less,difficult.Also,take care to ensure that re- i entry from the optional line into the main line is care- , fully designed,with clear forward and lateral sightlines. Ilk 8lk.1,46,, If you are providing different difficulty within a .+ ` single trail corridor, it will be most successful if the ,} `�y'ti.� range of challenge between the two lines isn't too r; lil ; `,� l broad. For example, expert level features may not be 1 1' \'.3. ' compatible on a beginner trail.Instead,consider keep- r ing the difficulty just one level different. .- Anchor the Trail ter: '!�� �/ 46 V'' Include objects to define or anchor the sides of the trail. ` G ,�, �, 0 These can be trees,large rocks,logs,or other obstacles TAlt vs \ It 1. vit., v .:,. ti `'ii C , ,f , _ f ry �k. �� Yom- a` w, ir'- „« 1 [ Anchoring—also called corralling—helps emphasize turns, prevent trail widenin9 P 9 revent shortcuttin , and adds challenge by keeping the trail narrow. (Golspie, Scotland) 234 How to Design Challenging pails