Two nights. Two Freezing hours outside. Two vans searching the night sky. Finally One perfect Aurora! It has to be a combination of a clear night and high rating in solar activity so best to check the Aurora App
Snowmobile on the Langjokull glacier is a great adventure for a group but no racing allowed sadly (Don’t forget to turn off the heaters on the grips as they get really hot)
Ice Caving always changes every season so you never get bored of it. Iceland is amazing as it always seems to have more things to see each time you go back.