1046 National Trails System Act, 16 U.S.C. §§ 1241-51 (2012); see 1983 Amendments, Pub. L. No. 98-11, 97 Stat. 48 (railbanking provisions).1047 See United States v. Rands, 389 U.S. 121, 122-23 (1967); Gilman v. City of Philadelphia, 70 U.S. 713, 724-25 (1865); Gibbons v. Ogden, 22 U.S. 1, 189- 93 (1824); United States v. 30.54 Acres of Land in Greene Cty. (Filiaggi), 90 F.3d 790, 795 (3d Cir. 1996). A servitude is an easement or other legal right to limited use of property without possession of it. See Section 4.6.5 (Easement Valuation Issues).