Here are a few photos from my groundhog adventure:
Here's the hole chewed in the lattice under the porch -I like to call it the portal of the damned.
Per instructions that I read on-line, you make a path with rocks or logs from the groundhog hole to the cage. This provides a direct path from their home to the river.
It took two different size cages to capture the "hogs" - the large one for the adults and the small one for the babies.