The patterns are curvilinear with hatchings. The cross-slabs are carved with Pictish symbols, Insular-derived interlace and Christian imagery, though interpretation is often difficult due to wear and obscurity. Several of the Christian images carved on various stones, such as David the harpist, Daniel and the lion, or scenes of St Paul and St Anthony meeting in the desert, have been influenced by the Insular manuscript tradition. Pictish metalwork is found throughout Pictland (modern-day Scotland) and also further south; the Picts appeared to have a considerable amount of silver available, probably from raiding further south, or the payment of subsidies to keep them from doing so. The very large hoard of late Roman hacksilver found at Traprain Law may have originated in either way. The largest hoard of early Pictish metalwork was found in 1819 at Norrie's Law in Fife, but unfortunately much was dispersed and melted down (Scots law on treasure finds has always been unhelpful to preservation). Two famous 7th century silver and enamel plaques from the hoard, one shown above, have a "Z-rod", one of the Pictish symbols, in a particularly well-preserved and elegant form; unfortunately few comparable pieces have survived. Over ten heavy silver chains, some over 0.5m long, have been found from this period; the double-linked Whitecleuch Chain is one of only two that have a penannular linking piece for the ends, with symbol decoration including enamel, which shows how these were probably used as "choker" necklaces. In the 8th and 9th centuries, after Christianization, the Pictish elite adopted a particular form of the Celtic brooch from Ireland, preferring true penannular brooches with lobed terminals. Some older Irish pseudo-penannular brooches were adapted to the Pictish style, for example, the Breadalbane Brooch (British Museum). The St Ninian's Isle Treasure contains the best collection of Pictish forms. Other characteristics of Pictish metalwork are dotted backgrounds or designs and animal forms influenced by Insular art. The 8th century Monymusk Reliquary has elements of Pictish and Irish styles. Language The Pictish language is extinct. Evidence is limited to place names, personal names, and contemporary records in other languages. The evidence of place-names and personal names may suggest that the Picts spoke Insular Celtic languages related to the more southerly Brittonic languages. It is possible that Pictish diverged significantly from the Southern Neo-Brittonic dialects due to the lack of influence of Latin. The absence of surviving written material in Pictish, discounting