'Long ago, a craft of mystical beings, the Shimmaron, crashed in country Australia. Water filled the crash site forming a mysterious purple lake which the locals called Shimmer. The town of Amethyst was built around the lake.
'The force of the crash scattered the Shimmaron through time and space. They long to go home but they can't until enough of them return to the lake. Only the children of Amethyst can hear their cries for help.'
Source: Allen and Unwin (http://www.allenandunwin.com/default.aspx?page=94&book=9780733320262). Sighted: 25/8/2011
'Summoned by the lost Wizard Shimmaron, Sam and Lincoln find themselves transported to a strange kingdom where nothing is quite as it seems. The brothers must find the wizard and get back to Amethyst, or face life in the Evil Overlord's sinister army.' Publication summary)Sydney : ABC Books , 2008