Dive.Is Divemaster program advertises the “opportunity to join dive expeditions to a number of locations around the country.” Dive Expeditions (part of Dive.Is) organizes 3, 5, and 10 day tours around Iceland.
Recently a fellow DMT was able to go on a 5 day tour to the West Fjords and Northern Iceland.His trip included Strytan- the only location in the world where you can dive a Geothermal Chimney/cone.
Unfortunately for me- my program ends before the next trip starts. (insert sad scuba tears here)
A note for future DMTs at Dive.Is!!!! Check the expeditions as soon as you arrive. I wasn’t informed about this experience until another DMT was on his trip. By then, my DMT program only had less than 1 month left, and little time to join such a fun opportunity.
Here is a picture of instructor Patrik enjoying Strytan.

Strytan is the only geothermal cone found in the world you can scuba dive to, the others are found at 2000m or deeper.