Translation:The mountain is low.
Oh also ㅂ doesnt always sound like a ㅁ. Only when its followed by a ㄴ (I believe). Like 합니 sounds like 함니. But if you think of 밥 it's more like bap. Not bam. Batchim letters are both effected by and can effect the next syllable.
The pronuncation for batchim is worth googling and just memorizing. There is a good app called pop popping korean sounds that is great too.