Photo 24 (Return)

Western Black Ven and Timber Hill. Note the contrast between the wooded and stable backscar of Timber Hill (to the left in 1978 photo) and the highly active backscar and terraces of Black Ven to the right. Instability within the undercliffs has been transmitted inland and westward to result in reactivations of the backscar westwards (to the left) towards the relic landslide scarp of Timber Hill (see 2001 photo). Further instability associated with the Spittles (out of shot immediately to the left) is migrating north-east towards Timber Hill. A major expansion of activity appears to be occurring as converging zones of instability intersect this area.

Mudslides surge over the sea-cliffs from the undercliffs forming lobes that cut across the foreshore and block drift. Periodically, the lobes are eroded back by marine erosion leaving aprons of deposited boulders and allowing beaches to reform and drift to operate. Thin beaches established in 1978 had been cut by renewed mudslide activity by 2001.