A lawyer for the family, José Refugio Rodríguez, confirmed to reporters that — the brothers — wrote the unsigned letter, although it was unclear which, or how many of El Chapo’s ten 10 or more sons were responsible for it.

Source: https://www.latimes.com/world-nation/story/2023-05-04/sons-of-mexicos-el-chapo-fight-back-we-dont-produce-fetanyl-feed-victims-to-tigers

As for Mulhacen, the preferred route leaves the Refugio de Poqueira above Capileira, before veering off.

Source: https://www.theolivepress.es/spain-news/2023/01/01/pick-of-the-peaks-for-hikers-in-spain-europes-second-most-mountainous-country/