もまた
Usage
In this usage もまた means the same as も; However, it is more emphatic and formal than も. また has several meanings, but in this use また is synonymous with も. "As well, also, too"
Examples
暑いのは好きではないが、寒いのもまた苦手だ。
I don't like when it is hot as well when it is cold.
日本語は話せるだけだなく、読んだり書いたり出来ることもまた大切です。
Only speaking Japanese is not enough, being able to read and write is also very important