What are these symbols in Garmin Pilot? When I start editing a flight plan in Garmin Pilot, if I have a distance that is farther (like 1,000 nm or farther) I get these two symbols in the map on the Flight Plan pane:



One is a tower and the other is an oval.

Here is the entire pane view:



Any idea what these two symbols are? 

The tower looks like the same symbols as 'obstruction' from the Garmin Pilot manual, but note that the filed altitude is 39,000 feet (ie, no obstacles that high around here.) 

What about the little oval?
Those are the highest obstacle and highest terrain point along the route, respectively. They're both grey because they're well below your planned altitude, so they're no factor.

You can see them by going to "Flight Plan", "Details", "Highest Point".