How do set high cliffs without 3rd party editors

Quick question. Since I have a mac, what file do I need to extract, and what do I have to edit, so I can make steep cliffs?

liek, actual clifs, or liek in my tpoic 'my hand at cinimaytioc terraini9n'

If you don't want to actually raise cliff levels, get UMSWE.
And yes you will ned UMSWE to do this, or Chryd Gods Enhancer...

You can then make hill WAY past the regular WE limit! I strongly recommend it!

where can I get UMSWE? Im having the same problem, but cant find where to get that program.

pop tools tread! ANY TOOL U WILL EVER NEED IS THERE

I keep getting fatal errors when i open it, it just doesnt work. I uninstalled all other editors that I have also.....what the dealio....

You need to reinstall mate.
Your "old programs" corrupted your WC3 and it doesn't work like it should.

Guess I should have wrote the mac part in bold. I have the unit files, that lets me do things like get the marines and stuff, but I don't know what file is needed for the steep mountains. So what file is needed, and what do I have to edit?

The Windows-equivalent file you are looking for is UI\MiscData.txt but I'm not aware of what it may possibly be in the Mac version (hopefully the same). The changes you need to make are to this section:
Where it says 50, replace with 85. If you go over 85 the vertices will fly off into lala land. You may also want to change the following section:
By changing the max and min heights to 2048 and -2048 respectively, you will have a much greater control over the height allowances for your terrain.

~kharma

Hehe, they go off to lala land eh? Hehe

That's kind... Extremly amusing... Thx kharma