Generic volcano: 1. Magma chamber 2. Bedrock 3. Conduit (pipe) 4. Pre-existing bedrock 5. Sill 6. Branch pipe 7. Layers of ash emitted by the volcano 8. Flank 9. Layers of lava emitted by the volcano 10. Throat 11. Parasitic cone 12. Lava flow 13. Vent 14. Crater 15. Ash cloud
By MesserWoland (own work created in Inkscape) [GFDL, CC-BY-SA-3.0 or CC BY-SA 2.5-2.0-1.0], via Wikimedia Commons
