This project was a Father's Day gift for my dad for up at our family cabin in Michigan's Upper Peninsula.
Lumber is clear grade 5/4 pine that my local Home Depot started carrying a few weeks ago.
I routed in the shape of the UP about 3/4 deep. It is filled with gravel from Lake Superior and topped with about a dozen Lake Superior Agates that I found last summer. The epoxy is Envirotex that I found at Hobby Lobby. I entended on ordering some West System epoxy, but with a 40% off coupon for Hobby Lobby, I couldn't pass up the deal, and the result was crystal clear.
The base ended up a little bit wider than I had planned, as it about an inch or so wider than the top on each side. I guess I'll never have to worry about it tipping over though. Legs are tapered out at 8 degrees if I remember right. It was just kind of an arbitrary number that I felt would look good. I wasn't going off any plans, and didn't really draw anything out. The spreaders or whatever you would call them between legs are half lap jointed.
Anyways, here are the pictures.