The document lists dates and locations of volcanic activity from various volcanoes around the world between January and December 2015. Specifically, it mentions eruptions and activity at Mount Etna, Villarrica volcano, Tongan volcano, Mount Sinabung, Piton de la Fournaise volcano, Kilauea volcano, Momotombo volcano, Colima volcano, and Calbuco volcano during this time period. All photos are credited to their original authors.

2. Mount Etna on December 3, 2015.

3. Mount Etna on December 3, 2015.

4. Mount Etna on May 16, 2015.

5. The Wolf volcano on Isabela Island, in May 25, 2015

6. Cotopaxi volcano, Ecuador, on August 29, 2015

7. The Villarrica volcano in Chile, on May 10, 2015.

8. The Villarrica volcano in Chile, on May 10, 2015.

9. The Villarrica volcano in Chile, on May 10, 2015.

10. The Villarrica volcano in Chile, on July 25, 2015

11. The Tongan volcano on January 17, 2015

12. Mount Sinabung Indonesia, on June 29, 2015

13. Mount Sinabung - Indonesia, on February 9, 2015.

14. Mount Sinabung, Indonesia, on November 16, 2015

15. Mount Sinabung, on June 20, 2015

16. Mount Sinabung on June 20, 2015.

17. Piton de la Fournaise volcano on February 5,
2015, in the French Indian Ocean island
of Réunion Island.

18. Piton de la Fournaise volcano on May 17, 2015

19. Piton de la Fournaise volcano on August 1, 2015.

20. Piton de la Fournaise volcano on July 31, 2015.

21. Piton de la Fournaise, July 31, 2015

22. Piton de la Fournaise, July 31, 2015

23. Kilauea Hawaii, on January 26, 2015.

24. Kilauea , on November 4, 2015

25. Momotombo volcano, Nicaragua, on December 2, 2015

26. Colima Volcano, also known as the Volcano of Fire, Mexico, on July 10, 2015.

27. Calbuco volcano, Chile, on April 22, 2015

28. Calbuco volcano, Chile on April 22, 2015.

29. Calbuco volcano, Chile on April 22, 2015.

30. Calbuco volcano, Chile on April 22, 2015.

31. Calbuco volcano, Chile on April 22, 2015.

32. Calbuco volcano, Chile on April 23, 2015.

33. Calbuco volcano, Chile on April 23, 2015.

34. Calbuco volcano, Chile on April 24, 2015.
All photos belong to the original authors.