Mountains of Power is part two of the Seasons of Heritage event in Pokemon Go, and it kicks off on Friday, January 7 and runs through Thursday, January 13.
During this time, the Season of Heritage Story continues with Team Leader Spark who believes the mysterious door encountered during part one requires the help of Rock- and Steel-type Pokemon to unlock it.
Pokemon from the regions of Johto and Sinnoh will be more prevelent during this time such as Zubat, Machop, Nosepass, Barboach, and Geodude. And a shiny Slugma will make its appearance for the first time, so if you are lucky, you may catch one. If you’re lucky, you might also encounter a shiny Onix and Ferroseed.