The Global Mountain Activity Group (GMA) was formerly known as the German Mountain Activity Group. The German Mountain Activity Group awards commenced on 1st April 2012. It was re-named to Global Mountain Activity Group on 1st August 2015.
Unlike SOTA (which requires 150 metres prominence), any summit which is 100 metres above sea level can be activated in the GMA program. All summits which have a reference number for a program award can be activated or worked, e.g. Summits on the Air (SOTA), World Mountains Award (WMA), HuMP Award, etc.
I joined the GMA in June 2013.
Two important rules are that:- a. QSOs before 1st April 2012 do not count. b. Nor do summits which do not have official names.