This is the first level in which you are required to save 100% of the Lemmings, except in the 2006 remake.
It is unusually hard to kill lemmings in this level. It is possible, taking advantage of a glitch on many platforms whereby a climber hitting his head will fall back down one pixel away from the wall, and placing a miner very precisely so that the climber falls through the miner tunnel and splats.
This is the first level with a release rate lower than 50, in this case only 1.
This is the first level to use the track One Way or Another on most platforms.