The workers have actually cleared away the tall grasses and the excavator was on site to prepare the foundation for the wooden piles. This will be a two step process. First the Foundation for the RC footers on which will rest the walls and then another few days later the excavation for the pond.
The Excavator is used to press the individual wooden pile into place after which Steel wires are meshed together and concreted added to finish up the foundation.
The Concrete, Laying on the Foundation for the Fish Room Walls. The foundation have been dug deeper than usual as the Fish Pond is almost 3' below the ground level. After the foundation concrete have set, They will start the excavation of the pond area in a few days time.
Here you can see the stock of ReBar being used about 3 tons total. You can see 2 tons in this pic. as well as the wooden jig use to bend the bars into the proper shape.
You can see from the last pic that the sun is getting yellowish and the day is almost done.