My case for Indian Mounds. Most of these noodles are not my own, but at this point it's the best compilation I can come up with.
Clue 1: We aint bluffin - Sometimes clue 1 can be as obvious as it seems. They are in fact not bluffing that it's in a park on a bluff. Vikings are done, Twins haven't started so what excuse do you have not to be in the city of St. Paul, supporting the wild.
Clue 2: IMpeachment, Johnson parkway leads right to the park. Andrew Johnson was the first impeached president. There certainly would be flora to be careful of (the mounds themselves and also Thorn street)
Clue 3: I liked David's thought that it's in a park covered by Mappy's book (dog-eared means folding the corner of a page down to bookmark it so a physical map like Map Guy's). You also might kneel to honor the dead who are buried here.
Clue 4: This one might be a stretch, but here goes. There were two stone cutters involved in an accident while building the St. Paul capitol building. One passed away (Albert Swanson) but one survived and only suffered a broken leg (he definitely salvaged life and limb). His name was FRANK Thiery. Frank street parallels Johnson parkway leading to IM park.
Clue 5: GRU airport code for Sao Paulo (St. Paul) references clear visibility of the St. Paul airport and the airway beacon still stands.
Clue 6: The first ever Ski Jump in St. Paul was built in Indian Mounds, before being destroyed and rebuilt in Battle Creek. A ski jumping hill certainly has a summit and would obviously plummet. You would wind yourself up before hopping off the end of the jump. Hopefully you'll stop before you reach the bluff.