Mount Margaret developers have started construction on a walking trail that is set to rival Castle Hill. Located in Alice River next to Rupertswood, Mount Margaret provides an outlook to the coastline and a nice view of the mountain range from the summit.
Mt Margaret summit is at 264m elevation making it smaller than Castle Hill by 22m. Only a hand full of Margaret Estate know of this trail so it's a lot less popular than Castle Hill. Also being shorter, the well formed track is easier than Castle Hill but has Guinea grass, Lantana and Rubber vine beside the track. The track follows the ridgeline up to the summit.
It's close to Fredericks Peak which is more of a challenge. You could also walk to just the sentinels or all the way out to South Pinnacle.
There is a four-wheel drive track that goes halfway up the mountain and it seems that a few people have camped at the end of it.
For an interesting, albeit slightly dangerous, alternative path down the hill, try the boulder field just left of the summit.
Here's an interactive map of the route up the mountain.