Psychle – I know exactly where you went and the route can be improved considerably by not taking the first drop down the steep walkers path.
There are a number of ways down to the valley bottom other than this. First one is to head off down the walkers path but bear left into the trees almost immediately. There are two vague single tracks down through here, with the one trending right being the better of the two.
An even better way is from the Tower to head directly away from the walkers path. Take the right hand branch of the sandy path into the woods directly away from the tower. After about 10m look on your right and try to spot the vague opening into the trees, you basically cut right at a large tree. Follow this over some small roots, small drop, tight right then drop down a bank, left, down into a hollow and follow the whoopy track over the small fallen tree and on down. When you get to the bottom, push back up the hill slightly and take the first obvious right hand fork in the trail. This then travels along on a flat level. After about 100m you should see a small track cutting in on the right, between a shrubbery and a tree. Follow this and after about 300m you'll come to an obvious area with some seriously large kickers and step downs on your left.
In this area there are now loads of way down into the valley on your right as well as the play things on your left. The best one drops down trending away from the tower, and has a very tricky gap/step down near the start that you can simply ride around. It then flows down round some cool little berms and jumps etc.
The other one trends towards the tower but starts at more or less the same place. Again, some large kickers and gaps that you can ride around.
Or from the original way in, you can simply keep on following the trail, trending slightly down and along the valley to explore the other tracks.
Once you've found your preferred way to the bottom of the valley, turn right and then after about 500m you'll end up at the bottom of the steep walkers track we were originally avoiding.