As Spring rolls on

Another deceptively blue day at the Park yesterday saw much rocking’n’rolling in the air with good heights and durations achieved (not to mention a Bronze acquired – congrats, Mark!); on the ground there was much raking’n’rolling as the trailer park eased towards firm flatness.
After gliders were put to bed, a clattering of rollers on pebbles heralded the following image: perhaps an opportunity for a caption competition?