Pickaxe Mountain, a secret nuclear site in the Zagros Mountains, shows continued construction, according to satellite imagery. IAEA inspectors have not been allowed to visit.
https://www.foxnews.com/world/experts-say-deeply-concerned-over-irans-work-underground-nuclear-site
https://www.foxnews.com/world/experts-say-deeply-concerned-over-irans-work-underground-nuclear-site