Mt. Diablo Park is considered a sacred place for native tribes that occupied the San Joaquin Delta area and a state historical landmark park. The park was named for its original sedimentary and metamorphic rock that is over 100 years old. Most of the rock is volcanic that erupted from undersea and formed from the movement of the tectonic plates.
Interns perform soil testing at in Rock City on the south side of the park. The site is know for its sedimentary sand stone rock formed from wind, and water that created small tunnels and caves. Rock City is also know for its variation of recreational activities like bike riding and mountain climbing.
Interns Antioch Highschool were practicing soil quality testing on three different soil samples from around the site. Interns used soil testing kits to test for three essential nutrients; phosphorus, potassium and nitrogen and pH. The goal of soil testing was to gain information about the vegetation growth, plant stimulation and quality of friend and flow in the park.


The natural history in Mt. Diablo Park formed the soil that was tested for today. Most of the rock is unaltered and has been influenced by the wildlife, vegetation and people who visit the park.
Interns found that the soil was easy to dig, samples were a combination of dry and wet and the temperature of the soil was warm. Interns also enjoyed the views of the valley from the summits south side and the rock formations at rock city.