Nipigon is an impact crater

Impact crater

In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...

  on Mars

Mars

Mars is the fourth planet from the Sun in the Solar System. The planet is named after the Roman god of war, Mars. It is often described as the "Red Planet", as the iron oxide prevalent on its surface gives it a reddish appearance...

, located in the Arcadia quadrangle

Arcadia quadrangle

The Arcadia quadrangle is one of a series of 30 quadrangle maps of Mars used by the United States Geological Survey Astrogeology Research Program. The quadrangle is located in the north-central portion of Mars’ western hemisphere and covers 240° to 300° east longitude and 30° to 65° north latitude...

 just North-East of the volcano Uranius Patera

Uranius Patera

Uranius Patera is a volcano on Mars located in the Tharsis quadrangle. It is about 3 kilometers high and it has shallow slopes. It belongs to Uranius group of volcanoes in the Tharsis area.Side of Uranius Patera consist of radial lava flows with few low shields with the large caldera which is...

. The crater is 9.3 kilometres (5.8 mi) in diameter.
The crater was named in 1991 after the Canadian town Nipigon

Nipigon

Nipigon is a township in Thunder Bay District, Northwestern Ontario, Canada, located along the west side of the Nipigon River and south of the small Lake Helen running between Lake Nipigon and Lake Superior...

, Ontario. It is also worthy to note that the location of Nipigon crater (33.7ºN 81.9ºW) in Latitude

Latitude

In geography, the latitude of a location on the Earth is the angular distance of that location south or north of the Equator. The latitude is an angle, and is usually measured in degrees . The equator has a latitude of 0°, the North pole has a latitude of 90° north , and the South pole has a...

 and Longitude

Longitude

Longitude is a geographic coordinate that specifies the east-west position of a point on the Earth's surface. It is an angular measurement, usually expressed in degrees, minutes and seconds, and denoted by the Greek letter lambda ....

 on Mars is close to that of Nipigon, Ontario (49°00′N 88°25′W) on Earth

Earth

Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...

.