الخصائص الإجمالية للخرسانة
Independence Rock (Wyoming) Independence Rock is a large granite rock, approximately 130 feet (40 m) high, 1,900 feet (580 m) long, and 850 feet (260 m) wide, which is in southwestern Natrona County, Wyoming along Wyoming Highway 220.During the middle of the 19th century, it formed a prominent and well-known landmark on the Oregon, Mormon, and California emigrant trails. .