Anglo-Saxon crosses are closely related to the contemporary Irish high crosses, and both are part of the Insular art tradition. The Ruthwell cross features the largest figurative reliefs found on any surviving Anglo-Saxon cross—which are virtually the largest surviving Anglo-Saxon reliefs of any sort—and has inscriptions in both Latin and, unusually for a Christian monument, the runic alphabet, the latter containing lines similar to lines 39–64 of "Dream of the Rood", an Old English poem, which were possibly added at a later date. It is high.