Magill Mountain
Summit in Llano County, Texas · on the USGS Magill Mountain quadrangle
30.90600, -98.77698
Maps that show Magill Mountain
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Magill Mountain, TX
USGS topo, 2022

Valley Spring, TX
USGS historical 15-minute topo (1955)

U.S. Fish and Wildlife Service Alligator Snapping Turtle Range (2024)
Fish & Wildlife Service Refuge Maps (public domain)

Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)

IFR Enroute Low Altitude Chart L-19 (U.S.)
FAA, 2026-10-29

IFR Enroute High Altitude Chart H-06 (U.S.)
FAA, 2026-10-29
Name, class, county and location: USGS Geographic Names Information System (public domain).