I've never done online book challenges. Lots of my online book reading friends do, so I thought I would give this one a try. My TBR mountain includes print books, audiobooks, and e-books. There are way more than I can read in a year, so I thought I would try reading or listening to at least 50 this year. I usually do a total of around 100 books a year, so I will reserve the right to read new things as well as TBR things.
Therefore, I am joining the Mt. TBR at the Mt. Kilimanjaro level of 50 books from my TBR pile.