Nephrite such as Lantian, Shaanxi, were also in great demand). There, white and greenish nephrite jade is found in small quarries and as pebbles and boulders in the rivers flowing from the Kuen-Lun mountain range northward into the Takla-Makan desert area. River jade collection was concentrated in the Yarkand, and the White Jade (Yurungkash) and Black Jade (Karakash) Rivers in Khotan. From the Kingdom of Khotan, on the southern leg of the Silk Road, yearly tribute payments consisting of the most precious white jade were made to the Chinese imperial court and there transformed into "objets d'art" by skilled artisans, as
Rock of Ages Light this light is unusual. The caisson which forms the first level is 25 feet high and contains a two-story cellar. From the bedrock up, a central steel core runs through the center of the structure and is its main support. Although "unique, . . . it bears some resemblance to the 1893 Chicago Harbor Light." Part of the reason for the closing of the Rock Harbor Light station was the 1875 establishment of the Isle Royale Light on Menagerie Island. Shortly thereafter, a third light station was erected in the Isle Royale area -- Passage Island Light lit on July