Lava Elemental is the main boss in the Ark Ragnarok ... on the Ragnarök map. Once you are in the area, you must travel to the coordinates described above, where there is a cave named Jungle ...

Magmasaur can be found all over the Volcano biome in Ark Genesis. You can find him more commonly in Volcano Cave ... map image below: The Magmasaur dislikes water and is attracted to heat, like lava.