
Authorities don’t have instruments on the island to accurately measure activity but are relying on eye witness accounts from the mainland and satellite photos.
It is now a cause for concern for around 500 plus people living in and around it.
The last ramblings from this particular volcano was back in mid-2015 and authorities are monitoring the situation very closely at present.
That is according to Steve Saunders of the Rabaul Volcanic Observatory in Rabaul. PNGFM