A BIOLOGY teacher is swapping school corridors for the Great Wall of China to raise money for cancer research.Lynda Milne, a teacher at Colchester Royal Grammar School, is taking part on a seven-day 170km trek with a team of other women who are hoping to raise £1 million for Breakthrough Breast Cancer.

A BIOLOGY teacher is swapping school corridors for the Great Wall of China to raise money for cancer research.

Lynda Milne, a teacher at Colchester Royal Grammar School, is taking part on a seven-day 170km trek with a team of other women who are hoping to raise £1 million for Breakthrough Breast Cancer.

Ms Milne, who is doing the trek with a friend, Mandy Lew, will walk during the day and camp beside the wall at night in July.

They are one of 22 groups of women who are planning to cover separate stages totalling 4,000 kms from the Gobi desert to the Yellow Sea.

Ms Milne said she and her friend are enjoying the challenge of training and fundraising, providing they can overcome the problem of finding time to train together.