Where High rank Nargacuga spawn location?

[IM]

I need to farm mat form H. Nargacuga. Plz tell me location to farm it

[torqueblue]

HR Dens in the Alcala Area Have them pretty regularly.

[The Waffle that Lurks]

There is also the 8☆ Subquest that will force a spawn

[Teero]

There is also a HR Narga subquest called "Nargacuga of the Night". You can just redo that over and over which I find is the most reliable way to farm monsters.