Layer Estimates:

Layer: NPS Trails (ID:0)
Count: 31620
Extent:

XMin: -19010451.3423
YMin: -1616220.4723
XMax: 16222785.6034
YMax: 9836437.9699
Spatial Reference: 102100 (3857)

Layer: NPS Land Resources Division Tract and Boundary (ID:1)
Count: 431
Extent:

XMin: -19005305.9134
YMin: -1606722.5535
XMax: 16222790.3208
YMax: 10644569.6237
Spatial Reference: 102100 (3857)