Clarification:
The first two photos are from Iceland, where the currently six vents are splattering and oozing. It's a real tourist attraction now. I've heard more than thirty thousand people have visited. I so want to go! So far these are small, but they are productive, and are filling the valleys with basalt. If they keep going a nice mountain will grow.
La Soufriѐre is a mountain, a quite impressive edifice. The last picture is a radar image looking down its throat. Too bad there is no scale. Using Google Earth measuring, that hole is about 700 meters in diameter.