Ideally, tank your hole with a membrane and pump. Only a noob garden-plane-in-hole owner would crane it in without one! Bit late now.

On the up-side, it looks like it's going into a concrete clad hole so may have a cavity not be buried in soil. It won't be permeable like basement walls that suck water out of the ground. I guess it's aluminium/titanium so won't be red dust by spring but can still corrode in some fashion depending on ph/oxygen. Could there be steel in things like fasteners?

Oh, and it's a tube... no idea how they've sealed the ends.