Where are the oldest volcanoes in Hawaii located?

The oldest volcanoes in Hawaii are located at the northwestern end of the Hawaiian Islands. This region includes the islands of Niʻihau and Kauaʻi, which are significantly older than the other main islands in the chain. The volcanic activity that formed these islands occurred millions of years ago, and as the Pacific tectonic plate moves over a stationary hotspot in the Earth's mantle, newer islands, like the Big Island of Hawaii, have formed to the southeast. The northwestern end is characterized by its eroded, older volcanic formations, which provide valuable geological insights into the formation and history of the Hawaiian archipelago.