Apparently there used to be a walkway along the entire outer wall. In some places, however, this path is hardly passable, including here. The path (including the wall) has partially collapsed, the jungle is taking back the terrain. But you can still walk along the wall from below (a minimal barbed wire shed is supposed to keep the mass tourists away), which is also what the workers do on the way to the antennas (which are still in operation).
Next to it there is a larger former vantage point, various benches show that. You have a very nice view to the north-east and a lot of peace and quiet. If you sit quietly for a while, the vultures will come. They like to fly just a few meters above you or sit on the antennae - it's easy to take photos here (if you miss a vulture, the next one will come soon).