CHARLOTTE TANNER: (Charly) 29-year-old British journalist. Short fair hair, medium build. Energetic, friendly and inquisitive. Only family is younger sister Ella.

ANNA BENHAM: 14-year-old British schoolgirl. Long brown hair, tall build. Adventurous and outspoken; has a reputation for being a troublemaker.

MATT FISHER: 14-year-old British schoolboy. Red hair, small build. Eager, excitable, the youngest in the student camp. Always carries a harmonica, and plays it often.

SILOWA ASUMOA: 14-year-old African boy. Tall, lanky, athletic build. Long braided hair. Working at archaeology site 20 miles from Chomlaya student camp.

JOE WILSON: 14-year-old British schoolboy. Found alive by young goat-herds at base of Chomlaya Rocks some distance from student camp. Suffering from memory loss.