On the prominent 'mountain'
Although one can climb up and along the rocky ridge from the east, (some risk, so please don't) the cache is best approached from the west of the island, on the clear path.
If you have children under 10 years old with you I suggestion you leave them at the summit look out point for a few minutes before continuing along the ridge path (otherwise, hold their hands). A few meters along the narrow ridge path from the summit lookout point there is a 'bad step' across a rock, please do not step out on the rock, instead take the safer, inside, left hand, north side little path through the foliage at this point. Do this and move slowly on the whole ridge and there will be an acceptable, low level of risk.