How many of the 10 natural wonders could you locate?
1. Cave of Crystals (Cueva de los Cristales), Naica, Chihuahua state, Mexico
Discovered in 2000 by miners working the Naica mine, these giant natural selenite crystals are some of the largest ever found, measuring up to 11 metres long and lying almost 1,000ft (300 metres) below the surface. They are rarely visited due to extreme temperatures and high humidity in the caves.
Link to article: feeds.theguardian.com/c/34708/f/663875/s/393bf022/sc/10/l/0L0Stheguardian0N0Ctravel0C20A140Capr0C110Cwhere0Ecan0Eyou0Efind0Ethese0Egeological0Ewonders0Equiz0Eanswers/story01.htm