Ore is distributed along of outcrop on the southwest side of the Lisbon valley anticline. The Ortobalagan Valley extends along the crest of the Berchil'sky anticline, which gently plunges northwest. This island chain appears to be a faulted east-west trending anticline. This creates canyons and cliffs when streams cut across the anticline. Its relief is within the north flank of the anticline of Biscay. The orebodies are on one limb of a plunging anticline and are extensively faulted. Jebel Nakhsh lies at the southern boundary of the anticline. Other specific geological places of interest include the State Circle cutting and the Deakin anticline. There is also an anticline in the northeastern block. The High Weald lies at the core of the distinctive Weald anticline. The central and eastern Franciscan belts form the core of this anticline. This structure is an anticline, or more specifically an east-verging pericline. The hills are distinct for their anticline structure. This northwestward dip is the northern limb of the Powell Valley Anticline. Ashdown Forest is itself situated on a local dome, the Crowborough Anticline.