Mangaweka Gorge Teardrop RegularMangaweka Gorge Teardrop Regular. The Mangaweka Gorge, New Zealands's Grand Canyon, featuring a spectacular river snaking through the Rangitikei valley, has inspired Lyndens newest short run of his Volcanic Teardrop Series. An original piece of glass art. Excellently suited as collector's item or interior design accent. Handblown by award winning glass artist Lynden Over in his Lava Glass Studio in Taupo, New Zealand. Each piece is signed and dated by