Jwala mukhi

Jwala mukhi ek rakam ke pahaarr hae, jahaan pe  lava (garam taglaa patthar) jamiin ke niche se nikle hae. 
Volcano ke top pe me jaada kar ke  volcanic crater rahe hae. Jab jwala mukhi  active rahe hae tab usme se galaaawa gais chij nikle hae. Isme bhaap, sulphur ke bhaap, raakhi aur patthar ke tukrra rahe hae. 
Jwala mukhi uu time ufnae hae jab ki nichche ke pressure uske top ke blow kar de hae. Jwala mukhi keEarth, like the Olympus Mons aur Mars me paawa jaae hae..

 Other websites 

The United States Geological Service (USGS) Volcano page 
Glossary of Volcanic Terms from USGS 
Volcanic and Geologic Terms  from Volcano World  - University of North Dakota (UND)
Television program (BBC) on the prediction of Popocatepetl's 2000 eruption