Post Reply - Mastodon esque bands

to me Mastodon is the epitome for my metalheart, they have all the elements I like about metal, and they speak to me, but I have trouble finding bands which give me the same joy and pleassure as they doo, the blend of mythology, sludge metal, hardcore, prog/psychadelia metal, intensety, and alot more.
I have been wanting to get into Isis (since they are Mastodons sisterband/soulbrothers) and Gojira who is Mastodons brother from another mother, I also somehowe like metalcore bands like Killswitch Engage (whom I think share some similarity ore are in some how in the same playground as Mastodon, (Isis and Gojira).

I mostly want bands which sounds more like the sound Mastodon have in songs like Trilobite, Trainwreck and Ol'Nessie, Megalodon and Aqua Dementia, dark, looming, gloomy, slow, but menacing. 