He has been the first Italian author to publish a choose-your-own-story gamebook, "In Cerca di fortuna" (Ripostes 1987) and the first to publish one for kids who can not read: "Il Mischiastorie - Osvaldo e i cacciatori" (Lapis 2005, illustrated by Valeria De Caterini).
Gold, copper, shell, and lapis goods were found in many of the stone-marked infant/child graves.
This was the main source of lapis lazuli in the ancient world, with lapis from here occurring in such famous archaeological discoveries as the Royal Treasure of Ur and the Tomb of Tutankhamun.
In 1983, however, Filippo Coarelli associated the Vulcanal with the site (also uncovered by Boni decades before) that by Imperial times had become known as the Lapis Niger.