Lillian's Glen is a moss and fern filled section on the 'Valley of the Waters' Creek (where the Nature Track crosses the creek, south of Edinburgh Castle Rock). There are stepping stones to help cross the creek. Lillian's Glen is a great spot to rest and enjoy the area, especially on warmer days. For the sure-footed, a short clamber upstream to Asmodeus Pool at the bottom of a waterfall, is worthwhile - a very nice spot at the end of a narrow canyon.