unmounded
/ʌnmˈaʊndəd/Definitions
1. adjective
not piled or heaped into a mound; having no mound or pile
“The unmounded soil revealed the old foundation of the building.”
2. verb
to remove or clear the soil or other material that has been piled or heaped into a mound
“The landscape gardener had to unmound the flowers after the storm.”