Thanks to those who posted. I'll give it a try. Sounds like I will need to move some shrubs to get clearance for the PVC pipe. It seems like I woud want to use two PVC pipes - a large diameter one that will remain in the tunnel and keep the tunnel from collapsing and the 1 inch one to run through the larger one and to clear the dirt out with. Is that right?
Of course the whole process could be stopped for good if I run into some of the rubble that the contractors threw around during the building of my house. I couldn't believe the amount of large concrete chunks that I have found while digging in my beds.
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