The tallest mountain is this range, Mons Blanc (Latin, not a misprint) is 3600m high. As with most lunar features, its slopes are much gentler than suggested by the dramatic lighting at lunar sunrise and sunset (around the first and last quarters).
The isolated mountains near the top left and bottom right are, respectively, Pico and Piton.
Photo: Patrice Poyet. The full size original of this can be seen in his large annotated collection of images, Poyet's Celestial HyperBook.