Conveniently recycled pie moulds were washed out
and pushed down carefully in the centre to make the main geyser crater (these are going to be the rocky geysers, not the flat lake\pond type)
Some foam core was cut to a random shape and bevelled at the edges before the pie tin crater was hot glued on top.
Wall Filler (spackle to our US cousins) applied to bring everything to the same rough level. I've also tried to make a couple of small craters for water to sit in as well.
The whole lot has now been left to dry until the next post.