Stone or concrete slabs may be used as a pad.
The underside of the sculpture has holes. Center the sculpture on the pad. Locate the largest hole and drill a 1” hole through the pad at that point.
Cut a piece of 1” pipe about 1’ longer than the sculpture is tall. Drive it through the pad into the ground. Measure to be sure pipe is lower than sculpture.
Lower sculpture carefully over the pole onto the pad.