2. Mount Ontake, Japan 9/29/14

3. Pyroclastic cloud Mount Ontake 9-28-14

4. Mount Sinabung Indonesia 2014

5. Mount Sinabung (Philippines) 2014

6. Pyroclastic cloud Mt. Sinabung (Indonesia 2014)

7. composite volcano in Guatemala.

8. “collapse caldera” (Poas Volcan, Costa Rica)

9. Montserrate with a pyroclastic cloud

10. Montserrat volcano, Caribbean and pyroclastic clouds

11. Crater Lake (caldera) Wizard Island (cinder cone)

12. Merapi volcano May 14, 2006 Indonesia

13. Pyroclastic cloud on Mt. Merapi May 14,2006

14. Lava dome (Mt. Merapi) and lava flow 5-14-2006

15. Pyroclastic cloud of Mt. Pinatubo chasing a truck

16. Irazu (composite volcano) Costa Rica

17. Irazu volcano, (composite volcano) alternating lava layers and acidic water in the crater

18. Cinder cone volcano

19. 700 foot Cinder cone volcano (northern California)

20. Students climbing a cinder cone volcano

21. Mount St.Helens before 1980

22. North side (Mt. St. Helens) Dec.2005

23. Students climbing Mt. St. Helens

24. summit of Mt. St. Helens (composite volcano)

25. Volcanic ash on the summit of Mt. St Helens

26. Mt. St. Helens building dome

27. Lava dome inside the caldera of Mount St. Helen (2004)

28. Shield volcano in Iceland (1974)

29. alternating layers of pasty and fluid lava (Mt. St. Helens)

30. Rising rock mass in the crater of Mt.St. Helens (April 2006)

31. Crater and active vent of Ertaale volcano (Ethiopia)

32. “lava coil” in pahoehoe lava

33. pasty ‘aa’ lava flow

34. Lava blister caused by escaping gases

35. Yellow sulfur and white acids

36. Mount Pinatubo (Philippines) ejects 5,000 tons of sulfur dioxide each day

37. Lava fountains in the rift of Kilauea (white lava 1150 degrees C. and the yellow lava 1090 degrees C.)

38. volcanic lightning

39. Son of Krakatoa (cinder cone) east side of the Indian Ocean

40. Tsunami similar to the waves produced by Krakatoa

41. Mount Etna a composite volcano (Sicily)

42. Views of Mount Etna’s eruption

43. Aniakchak explosion caldera (Alaska)

44. Pahoehoe lava covering a national park road in Hawaii.

45. “aa” lava “aa” lava

46. pahoehoe lava (Hawaii)

47. pillow lava (Hawaii)

48. Mount Mageik (Alaska) composite volcano

49. Lahar produced by the Santiaquito volcano (Guatemala)

50. shield volcano shield volcano

51. Pahoehoe lava (Hawaii)

52. Volcanic ash

53. fumarole covered with sulfur

54. House consumed by lava (Hawaii).

55. Portable house for volcanic regions

56. Pyroclastic cloud of ash, cinder and burning gases moving at 50 mph

57. blocks of pumice of a pyroclastic flow

58. Lava surrounds a house (Hawaii)

59. Augustine (composite volcano) Alaska

60. lava fountain and pyroclastic debris from Kilauea volcano