User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-6005381-20130504091203/@comment-1837917-20130504092756

I don't know about a lava dragonship fight, but a dragonship (either land or air based) appears in the base camp of the Lava Canyon.

As for the snake, it could be a super-sized version of the new species that Garara Ajara belongs to (which some fans have fondly termed 'Naga', it's 'official' name is along the lines of Snake Dragon).