Pebbles

It was night and there were three children playing in a pile of pebbles near a brightly illuminated snack machine
They were next to an old building covered in chipped blue paint
The area was lit by lampposts on all four sides of the old place
The children were very young and small
One black, one ginger, and one blonde in pigtails
They were playing with the pebbles as though they'd never seen them before
Every minute or so, a woman in a track suit would jog past the children
Making laps around the old building
The children would laugh and smile at her as she continuously passed them
But everything was silent