Go to 100% checklist thread at top of listings (has a sticky)--post # 21 has a link to a map---click on 100% completion and then hidden packages-- click on whichever one you need to see a picture of where it is and a short description.
There are at least 3 that require a helicopter to reach them-- maybe another 10 in which the helicopter is easier to reach them but not required.
Make sure you mark off the ones you got so you don't spend hours like me trying to figure out which 2 you missed (I have them memorized now)
http://bradsnet.net/hp/
