We are on the way to Baxter in July, Having never been to the "Grand Canyon" of Maine, is it possible to check this out on the way to Millinocket (from MA)? Are there any must do spots, excellent swimming holes etc? Our hope is to do something short on the way up to Baxter. Any tips or advice would be appreciated. p.s. I realize this is not exactly a "top" but heard it was an interesting view or swim.