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The Northern Boundary

The Northern Boundary from directly overhead

The Northern Boundary is a historic site in Illinois, at a modelled elevation of 204 m. Johnson’s Mound stands 273 m to the northeast, 20 miles off. The nearest named place is Sannauk Forest Preserve, a nature reserve less than a tenth of a mile away. Historic Route 66 passes 23 miles off. 2 named summits stand within 25 miles.

What the record says

Material
metal

How to reach it

Coordinates41.63769, -88.65535

Overlooks nearby

Named places within 25 miles

Nature reserves
Parks
  • Children's Park: 1.4 mi
  • Sandwich Memorial Park: 1.5 mi
  • Finding Heroes Park: 1.6 mi
  • Somonauk Community Park: 1.6 mi
  • Henderson Park: 1.8 mi
Museums: 20
  • Stone Mill Museum: 2.0 mi
  • Fern Dell Museum: 7.8 mi
  • Air Classics Museum of Aviation: 12.5 mi
  • Sugar Grove Historical Society: 13.7 mi
  • Earlville History Museum: 14.2 mi
Artworks: 12
Attractions: 8
Picnic sites: 4
Peaks: 2
  • Maramech Hill: 5.9 mi
  • Johnson’s Mound: 19.5 mi
Cliffs: 2
Ghost towns: 2

Summits around it

The highest named summits within 25 miles of The Northern Boundary. Elevation from each summit’s own record; bearing measured between the two coordinates.

SummitBearingElevationDistance
Johnson’s MoundNE273 m19.5 mi
Maramech HillE196 m5.9 mi

When to go

Light through the year

The recorded facing catches the sunset.

DateSunriseGolden hourSunset
March equinox06:5918:3019:07
June solstice05:2119:5120:33
September equinox06:4318:1718:54
December solstice07:1915:4316:28

Local time (America/Chicago).

Climate normals

Months averaging 50–80 °F: May–Oct.

JanFebMarAprMayJunJulAugSepOctNovDec
Avg °F232738496070737164523928
Precip in1.31.42.23.64.14.03.73.33.03.22.31.7

1991–2020 U.S. Climate Normals, NOAA NCEI — Chicago Aurora Muni AP, 13 mi away.

Where this comes from

Location and category confirmed against OpenStreetMap.

OpenStreetMap

OpenStreetMap element node/13950650257

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