There are earthworks of two ornamental tree-clumps in Glynllifon Park (NPRN 86377). The clumps are shown on the 1st edition OS County series (Caernarvon. XX.7 1889), but not on the 2nd edition (1900). They are both embanked enclosures: that at given NGR being originally tear-shaped, 70m north-north-east to south-south-west by 50m; the second, 30m to the south-west, is ovoid, 56m north-north-west to south-south-east by 35m.

J.Wiles, RCAHMW, 7 September 2004