As the film continues, it's revealed that the academy's director, Mother Markos, is actually a powerful witch who has been using the academy as a front for the coven's ritualistic practices.

Source: https://collider.com/suspiria-2018-ending-explained/

The areas now under Fano's sway include significant zonal cities like Debre Tabor and Debre Markos, as well as the renowned tourist destination of Lalibela.

Source: https://allafrica.com/stories/202308050054.html

The second half of the trailer maintains an ominous tone, as Markos warns Nelly that death is inevitable if she continues down the path she's on.

Source: https://screenrant.com/broadway-movie-trailer-exclusive/