Pheidole ants nesting in a coconut shell

I came across a colony of Pheidole ants, that seemed to have chosen an old cococnut shell, within which to nest.
Shot with a Panasonic Lumix DMC-FZ2500/FZ2000 and Sigma Achromatic Macro lens filter.

macro,Panasonic Lumix DMC-FZ2500/FZ2000,sigma sigma achromatic macro lens,