New block type?

[SgtSpike]

Taking guesses... I really have no idea what the new block type might be.

 

[Kiwinz]

Mud

dirt + water

 

[joneswa]

it's a block for the other dimension, the 'hell dimension'. So it's probably like evil looking dirt or something.

 

[t3haxle]

I raised the brightness/contrast in PS

Looks a lot like creepers imo.

 

[ieatfish]

Wow, it does look like a bunch of creepers. Check out this thread: viewtopic.php?f=20&t=70 Is that the block there or are those different?