Hi,
I spent about 6 months in Panama last year and am heading back to start up a helicopter company.
http://www.lifeflightpanama.com
I have heard of sigtings of aircraft in the jungle their but no definate locations.
I then read a book I've hung on to called "Mustang Ace" by Robert J. Goebel who describes his times in Panama training before heading to Africa and Europe during WWII.
Helicopter is the best way to see or search Panama so if anyone has any ideas of the locations worth looking at please contact me as I'll be there.
Thanks!