Buried cigars?

Gentlemen,
I'm pulling the trigger on the plan.
I want this thing to be water tight, so glued PVC is what I'm going with.
The local supplier (who I often work with) is making me a tube that will be:
-Four foot long section of 8" inside dia. PVC with a glued cap on bottom (definitely water tight)
-This vessel will have a screw top cap that will extend slightly above the ground surface

The 15 cigar caddy will fit into a this tube. I could stack two 15 (or smaller units) into the tube. Removing the foam will give me space in the caddy to pack in more cigars. I will insert a lifting device so that I can get to them.

I think I can safely say that this system will keep 40+ cigars at good temps in the heat of summer.

I'm picking up the tube tomorrow and will bury it on Thursday. I'll post pictures of it before I start digging.

I'll be sure not to put it's GPS coordinates on any geocaching websites!

I