right...i see people have failed to inform you on were you need to go to get into battles with magic pots and movers....movers give 0 EXP and 2400AP for a group of three.,..magic pots give you 1000AP each....i left out a zero in my last post but the magic pots also give you 8000 EXP each so i like them more....anywho...you go to the place where your party asks which direction to take....you send them all to the left...you go to the right...jus follow the path here and you will reach a giant spiraling ribcage....keep going and you will reach the place where all your friends are gathered...talk to them to receive items...go back to the screen jus before you got to all your friends and use your save crystal and save your game(MAKE SURE YOU SAVE ON A FRESH SLOT AS SOMETIMES THE GAME GLITCHES AND YOU WONT BE ABLE TO GO BACK TO THE HIGHWIND...if the glitch does happen which it shouldnt as long as you use the save crystal where i told you...you will be able to load the game and try again...)....go to back to the crossroads where you told all your friends to go left....this time you should also go left...in this room there is a kind agreen glow and a big stone or something and also a doorway....go through the doorway and you will see it is in fact the place you were searching for...there are three different parts of this cavern and if you go out the door on the last screen you will end up back at the place were your friends give you items...save your game then try to go back to the highwind...if you cant it is just a glitch...just load the file and try again...you shouldnt have any problems as long as you use your save crystal in the screen before you talk to your friends and they give you items...
there you go hope this helps....