- Rock (geology) (Wikipedia)
In geology, rock (or stone) is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition, and the way in which it is formed. Rocks form the Earth’s outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere. The study of rocks involves multiple subdisciplines of geology, including petrology and mineralogy. It may be limited to rocks found on Earth, or it may include planetary geology that studies the rocks of other celestial objects.
- Indian Mounds Regional Park (Saint Paul, Minnesota) (Wikipedia)
Indian Mounds Regional Park is a public park in Saint Paul, Minnesota, United States, featuring six burial mounds overlooking the Mississippi River. The oldest mounds were constructed about 2,500 years ago by local Indigenous people linked to the Archaic period, who may have been inspired by the burial style known as the Hopewell Tradition. Mdewakanton Dakota people are also known to have interred their dead here well into that period. At least 31 mounds were destroyed by development in the late 19th century. This burial mound group includes the tallest mounds constructed by people Indigenous to Minnesota and Wisconsin (except for the unique 45-foot (14 m) Grand Mound outside International Falls, Minnesota). Indian Mounds Regional Park is a component of the Mississippi National River and Recreation Area, a unit of the National Park System…