Need congeography help

[MetalRenard]

The temperature would depend on the height. Mt Everest for example - The peak is -15C to -40C depending on the time of year.
http://en.wikipedia.org/wiki/Atmospheric...e_1962.svg
This is a rough guide - how high is your mountain plateau going to be? 10km up gives you -70C from sea level temperatures. 1.8km (a mile high) would be -20C. (C is celsius. 1 Kelvin = 1 celsius. 0 Kelvin is the lowest possible temperature where even atomic activity is frozen. 273.5K is the freezing point of water.) To convert celsius to farenheit for my American buddies: http://www.mathsisfun.com/temperature-conversion.html

Iron etc: That's quite possible, so why not? If there's iron, the rock would be red, could be the seed for a myth about "blood in the rocks" or something.
"The great titans fought a war here with weapons so powerful they carved out the valey below. Their blood drenched the rocks. And now we prosper, the titan rock empowers our armies and gives us a way of life. That was their gift to us, albeit a dark one." - My overactive imagination