The Doton no Jutsu is common among the ninja of Iwagakure, in the Land of Earth. Doton techniques are commonly affiliated with the snake hand seal.
Earth is naturally strong against Water, but likewise, is also naturally weak against Lightning. Earth Release also has a good relationship with Fire; used together, an Earth/Fire combo has quite the powerful explosive, offensive, destructive power.
Combined, Earth and Fire create Lava, an Advanced Nature Transformation can naturally blend the earth-natured chakra with the fire creating Yoton (Lava Release), unique from the Four-Tailed Monkey. It can also be blended with Water to produce Wood, unique to the First Hokage, although also used by Tenzo.