The Caspian: From the cabin, go back and climb up a ramp and across a rock formation (which you had previously passed under). At the end of a metal catwalk on the other side, you will find the letter on a radio next to a sleeping bag.
Nadir, this Baron is taking us for fools! Have you read the leaflets his flunkies heaped at all the entrances? «You call yourself free people, but your leaders, superiors and, in fact owners, crammed you all into caves and would have their stones fall on your heads rather than let you receive the blessing of the Holy Flame...» He's ripping the Revelation off, and thinks we're none the wiser!
Do you remember asking me what is an artist to do after the Doomsday? I couldn't give you any advice back then, but now I have an idea: paint our reply to this dog! Paint it so everyone could see what was, what is yet to be, and why we will never surrender! Paint to make the souls sing! I know you can.
Always your friend,