Top 10 Largest Volcanoes on Earth Some volcanoes are so massive they stretch across entire regions. These giants were shaped over millions of years, and a few are still active today 👇 1️⃣ Mauna Loa (Hawaii, USA) – The largest volcano on Earth by volume and area; taller than Mount Everest if measured from base to summit 2️⃣ Tamu Massif (Pacific Ocean) – The largest volcano ever discovered on Earth, hidden underwater 3️⃣ Mauna Kea (Hawaii, USA) – Taller than Everest from base to peak, mostly subm