Volcanic activity
Furnas in Sao Miguel Island is a place where you can walk along a trail, observe volcanic activity, boiling water and "enjoy" the sulphuric smell. Many times also are able to feel light earthquakes.
https://en.wikipedia.org/wiki/Furnas
Adele D. Oliver 13/06/2019 2:36
always fascinating to see and experience the power ofthe earth below ... a fine capture in black an white
showing the steam well |!!
warm regards,
Adele