9 of 16 photos
Categories & Keywords

Subcategory Detail:
Keywords:American history, Black Hills, Crazy Horse, Custer, Mount Rushmore, Native American, South Dakota, USA, West, Wild, forest, geology, hiking, lake, landscapes, ponderosa pine, scenic, travel photography, wildlife
Photo Info

Dimensions1700 x 1135
Original file size405 KB
Image typeJPEG
Color spacesRGB
Date taken31-Jul-16 09:36
Date modified30-Aug-16 23:24
Shooting Conditions

Camera modelNIKON D800
Focal length24 mm
Focal length (35mm)24 mm
Max lens aperturef/2.8
Exposure1/500 at f/8
FlashNot fired, compulsory mode
Exposure bias0 EV
Exposure modeManual
Exposure prog.Manual
ISO speedISO 100
Metering modePattern
Digital zoom1x
Black Hills South Dakota Marc Haegeman

Spearfish Formation

These rock layers of red sandstone and maroon siltstone, known as Spearfish Formation, are the oldest in the Devils Tower landscape. They date from the era when this part of the United States was covered by sea - 225 to 195 million years ago.