Leave the parking on Victoria Access Rd and head up passing the Ruyteplaats Private Mountain Estate gate on you left. You will walk up through the forest. When you emerge from it keep left at the fork and at the next 3-way fork turn right. You will then take the next path left up towards the Corner.
The Apostle Battery, located just north of Hout Bay corner is one of three in a telemetry network around the Cape Peninsula that was used to protect Cape Town from enemy attack during WWII.