They consist of what are known as half-oval iron strips, and can be had usually at a hardware store or blacksmith shop.
It began—this half-oval—in high land among the trees and spread down over a beach to the waters of a tiny cove.
1570s, from Modern Latin ovalis "egg-shaped" (source of French oval, 1540s), literally "of or pertaining to an egg," from Latin ovum "egg" (see ovary). The classical Latin word was ovatus.
1560s, from Middle French ovalle "oval figure," from Medieval Latin ovalis (see oval (adj.)).