Susan Dalgety has some spectacular close encounters of the natural and animal world as she takes a trip in the footsteps of David Livingstone along the Shire River.
Stepping gingerly into the small, wooden motor-boat, I caught sight of a crocodile lying silently in wait across the wide expanse of water. Or was it a dun-coloured log? I shivered. Suddenly my plan to travel up a short stretch of the Shire River, following the trail of Dr David Livingstone, seemed less brilliant than when I conceived it several days ago.