Texas Pacific Land Trust (the Trust) is engaged in managing land, including royalty interests, for the benefit of its owners. The Company operates through managing the land segment, which includes sales and leases of such land, and the retention of oil and gas royalties. The Trust derives revenue from all avenues of managing the land, such as oil and gas royalties, grazing leases, easements, sundry and specialty leases, and land sales. The Trust has a perpetual oil and gas royalty interest in 459,200 acres. As of December 31, 2016, the Trust owned the surface estate in approximately 887,553 acres of land, consisting of numerous separate tracts, located in 18 counties in the western part of Texas. As of December 31, 2016, the Trust also owned a 1/128 nonparticipating perpetual oil and gas royalty interest under 85,414 acres of land and a 1/16 nonparticipating perpetual oil and gas royalty interest under 373,777 acres of land in the western part of Texas.