So it appears the issue is with the way the iso was created.
Here is an answer from the Ask Ubuntu site.
https://askubuntu.com/a/153909
Since 11.10, Ubuntu ISOs have been "hybrid", meaning that the ISO can
also be written bit-for-bit to a USB device to make it a working
Live-USB, without having to use StartUp Disk Creator, UNetBootin, etc.
Note that this "hybrid" is different from the OS X/Disk Utility
definition of "hybrid", which simply refers to an ISO readable on both
Mac (HFS+) and Windows (ISO9660).
Ubuntu's hybrid functionality is
provided by the isohybrid script in the SysLinux bootloader. It works
by encapsulating the standard ISO9660 CD filesystem within a
partition, so that it will work unmodified if written to a USB/hard
disk.
So I wasn't able to mount the iso in the way I was wanting however I did find a file extraction tool called Keka that allowed me to extract the distro iso and then browse the filesystem. Which was the next best thing.