 There are 2,909 hot spring vents within the city, and these account for more than 10% of the 27,644 hot spring vents in Japan, according to a survey conducted by the Ministry of the Environment in 2004.Statistics from the Beppu City Hall show that more than 130,000 tons of hot spring water gushes from the ground every day.This is the second largest amount of hot spring water discharge in the world, and the largest amount in Japan.