Copper Coast is a region of South Australia situated in Northern Yorke Peninsula and comprising the towns of Wallaroo, Kadina, Moonta, Paskeville and Port Hughes. The area approximately bounded by Wallaroo, Kadina and Moonta is also known as the Copper Triangle. The area is so named because copper was mined from there in the late 19th and early 20th centuries, a significant source of economic prosperity for South Australia at the time. These three towns are known for their large Cornish ethnicity, often called "Little Cornwall". Kernewek Lowender is the world's largest Cornish Festival, held biennially in the Cornish Triangle. The area continues to make a significant contribution to the economy of South Australia, as a major producer of grain, particularly barley and wheat.