Coming in third in size and action is Hualalai, situated on the western side of the Big Island. Hualalai's pinnacle is at 8,271 feet above ocean level. It's last eruption was in 1801 and has the potential for another emission soon… according to history, the volcano emits lava every 200-300 years. This could have huge effects on the island of Hawaii as their main airport, the Kona International Airport, was built on an old Hualalai lava flow. A huge benefit of Hualalai is it’s rich volcanic soil. The western slopes are home to most of Kona’s famous coffee crop.