This retreat Sadasivanathaswami and Sivanadiyar Girish drove across the island to the Quarry in Eleele to mark more large boulders that have been stockpiled for the Iraivan landscaping project. There were some gems in this set, and now the monks are engineering the delivery in early June. Underneath the red dirt clay is a blue-black basalt stone, dark and powerful, born in the early fires that built the island. Basalt is volcanic rock that forms near the surface of the planet and quickly cools. It differs from granite by having somewhat less quartz in its composition. The name "basalt" means very hard stone" in Latin.