Well, the creator of this website may know their names in Spanish

, and I know some places' names in Spanish in Rayman Revolution such as the Cave of Bad Dreams's name being translated directly to "la Cueva de los Malos Sueños" in the Spanish version of Rayman Revolution, as well the Santuary of Stone and Fire and Beneath the Santuary of Stone and Fire having their names switched and then translated consecutively.
By the way, I've created the Minisaurus Plain article in the Spanish version of RayWiki:
https://raymanpc.com/wiki/es/La_Llanura_Minisaurus