AN Indiana Jones-style challenge is awaiting a St Ives woman who plans to tackle one of world's toughest terrains - on horseback. Kirsty Dance, of London Road, will be riding a horse across the Andes, one of the world's highest ranges of mountains, to raise money to help elderly and distressed horses. The trek involves tackling paths alongside volcanoes, treacherous scree, marshland and rocky terrain. Kirsty, who has been riding since she was 10, will be in the saddle for seven hours a day for seven days, on a specially-trained horse. The 26-year-old is having to undergo special fitness training so she can combat altitude sickness.