31381922earthworksPT2026-03-30 20:43:03UF31381923earth worksNDUF31381924earthworkNDUF31381925works, earthNDBT31350997single built works by location: topographicalPTNT31418104wellsPTNT31418106cutsPTNT31418109embankmentsPTNT31418111moundsPTNT31418115pitsPTNT31380033deneholesPTNT31402272geoglyphsPTRT31360599earthworksPTRT31381963earthen architecturePT