The Search Begins. . .
Welcome to Mystery Class 2016. This view is a clue from one of the secret sites:

High overhead on this January day,
a drone flew above us with its camera in play.
It did not surprise us since we'd planned its flight,
to show you our long shadows cast by sunlight.
They've been getting shorter since that last solstice day,
while our days have grown longer bringing more light our way.