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<br />O~2;SJg <br /> <br />mitigate any impacts to heritage resources. In addition to these actions, at least 125 sites <br />are monitored annually for any adverse effects or vandalism. Because of the protections <br />afforded under various laws, adverse effects to heritage resources are minimal. <br /> <br />Research natural areas (RNAs). RNAs are established to maintain areas of natural <br />ecosystems and areas of special ecological significance. The Forest currently shares <br />one RNA (Hoosier Ridge) with the Pike National Forest Fifteen potential RNAs have <br />been identified for possible inclusion into the system. These range in size from 1,420 to <br />24,450 acres. The number and vegetation representation of proposed RNAs varies <br />depending on the theme of each alternative. Alternative B proposes no additional RNAs; <br />Alternative E proposes four additional RNAs, totalling 60,000 acres; Alternative F <br />proposes seven additional RNAs, 69,300 acres; Alternative C proposes nine additional <br />RNAs, 87,300 acres; Alternative 0 proposes 12 additional RNAs, 106,100 acres; and <br />Alternative I proposes 15 additional RNAs, 129,600 acres. <br /> <br />Scenic byways. Parts of three scenic and historic byways pass through the Forest <br />These byways promote scenic and historic values along their routes. Forest lands along <br />the byways can be allocated with an emphasis on the same values as the byways. <br />Alternatives Band F offer the least support to this emphasis while Alternatives E and C <br />offer the most <br /> <br />Caves. Within the boundaries of the Forest is a significant concentration of caves with <br />resources that are essentially non-renewable. The Forest Plan Revision will integrate <br />protections, under the Federal Cave Resources Protection Act, for at least some of these <br />valuable resources. Alternatives C, 0, F and I will recognize 42 "significant" caves. <br />Alternative E recognizes three "significant" caves. Alternative B does not recognize any <br />"significant" caves. <br /> <br />National trails. The Forest manages a segment of the Continental Divide National <br />Scenic Trail and three National Recreation Trails. Other trails of national or regional <br />significance either cross or are proposed to cross the Forest All of these trails playa role <br />in providing trail-related recreation in systems that reach beyond Forest boundaries. <br />Effects on national trails will be minimal and do not vary significantly among alternatives. <br /> <br />Special interest areas. The Forest has some special and unique resources. Planning <br />procedures and regulations allow for the recognition and protection of these resources. <br />Six special interest areas have been variously proposed among the alternatives to <br />emphasize recreation use and interpretation of the environment Alternative E proposes <br />the most areas allocated to this purpose, followed by Alternatives C and I. Alternatives B, <br />o and F propose no allocations for this purpose. <br /> <br />Thirteen special interest areas have been proposed among the alternatives to minimize <br />recreation and other uses in order to protect their special biological values. Alternative 0 <br />would allocate the most land for this purpose, followed by Alternatives I, C. E and F. <br />Alternative B would allocate no lands for this purpose. <br /> <br />Wild and Scenic Rivers. Forests are directed to evaluate their rivers during the planning <br />process for inclusion in the National Wild and Scenic River System (NWSRS). The <br />Forest evaluated all of its rivers, including 77 in detail, and found five rivers totalling 103 <br />miles to be eligible for inclusion in the NWSRS: the South Fork of the White River, the <br />Crystal River, Deep Creek, the Colorado River in Glenwood Canyon. and Cross Creek. <br />The South Fork of the White River, Deep Creek and the Crystal River are recognized in <br /> <br />-- 38 - <br />