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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: 21
  • 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: 14
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 MoundNE 37°273 m19.5 mi
Maramech HillE 89°196 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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