Well ... you can walljump into Ghostlands from EPL without having BC installed here are some screens how to do it. You can't do quests there or whatever without BC though.
1) Go to this spot in EPL.
http://tinypic.com/view.php?pic=62fbaxx
2)Wall jump up here. Takes some skill
http://tinypic.com/view.php?pic=53pgcia
3)Jump up there.. not hard
http://tinypic.com/view.php?pic=4pnkbad
Follow the arrows from now on
http://tinypic.com/view.php?pic=6hf7k7l
http://tinypic.com/view.php?pic=67egmtu
http://tinypic.com/view.php?pic=5ymd0xx
http://tinypic.com/view.php?pic=68k9r1k
http://tinypic.com/view.php?pic=4ys1wrd
http://tinypic.com/view.php?pic=4px2zp3
http://tinypic.com/view.php?pic=6f7ylon
Hope you all like it
Note: I'm right behind the instance to Ghostlands from EPL on the last one.
Yes I have BC installed but it works without it... Tried it on my non BC account. The ghost gryphon and Blood Elf is just model editing.