What a mess! This is where the 4 undeground geothermal loops and the supply/return lines from the house get connected together. The water is from an undeground spring (this corner of the property stays wet year-round) and was added to by several days of rain. When Josh came back to make the final connections, he brought a gas-powered utility pump, but of course it wouldn't start! At least they wore their waders and brought plastic to make a tent to work under. The connections between the supply/return lines and the field loops are made using 2 distribution headers and welding/fusing the connections with an electrically heated iron to make things permanent. Then everything you see here gets buried 3-4 feet deep underground.