This is to build the walls which sit on top of the cast concrete beams which in turn are connected to the steel piles which The Mole from Thunderbirds put in a couple of years ago.
Mr Builder has been busy, because bags of sugar in the local co-op have doubled in price, and the large piles of blocks are depleting nicely.
The next phase will be to complete the foundations, and lay a concrete slab into which the track will be set.