Coal Heads?

KIrkcudbright Show day 1.   One  of the main attractions at this show every year is the presence of various steam machines.  There is always a full sized traction engines through small models (this isn't the smallest) to a lorry mounted stationary engine.

The group round this engine caught my eye.  The driver (the young lad at the rear) obviously deep in discussion with the little fella's Dad.  I have heard of Petrol Heads but these struck me as "Coal Heads".

A slightly damp day (perhaps an understatement) but very enjoyable never the less.  Kirkcudbright is such a friendly and pleasant little show we look forward to going every year.