I have went down to bed rock and I noticed a certain area that has a shade of darkness no matter how many torches I use. I don't know if there is a nether portal or something mysterious near by any ideas? I have snapshots but can't put them on post.
Its a new effect added in 1.8. There isn't anything you can do about it. It was added to keep people from seeing if it was day or night down at bedrock level.
it is a feature that notch (unfortunately :SSSS:) implemented to increase the ambiance of the game. the further down you go the more dust is in the air decreasing the effective distance of the light
It encourages living above ground or near the surface, as does hunger. Awesomeness.