Though normally I'm intrigued by trying to get to bizarre places, in this case I'm quite content to read about the mountain in biologists' reports. This report goes out of its way to warm about the rain and the damp, and I believe him - the few pictures I've seen of people at the top makes it look unpleasantly moist in all respects. This report is written in an inappropriately cheerful tone, given the description of inch-long ants eating their faces and flying beetles they mistook for birds.
Images 1, 2, and 5 from All That Is Interesting. 3 is from profanofeminino.com, 4 is from Wiki.
One can be forgiven for thinking that Roraima is a boundary not just for three countries, but for other dimensions.
I made it onto Boingboing with my other blog post for pointing out that these mountains clearly demonstrate we are in a simulation, and that the simulation is Minecraft.