The Tai Long Wan Hiking Trail Starting at Sai Wan Pavilion, this immensely popular hiking trail first traverses Sai Wan and then Ham Tin Wan, both of which face the Pacific Ocean. It never ceases to amaze visitors with such landforms as streams and estuaries as well as turquoise water and fine sand. In addition, the path that connects Sai Wan and Chek Keng is composed of strata formed by volcanic activities in Sai Kung around 140 million years ago. Volcanic activities were active and extensive here in ancient times, as evidenced by the changes of the strata that are easily noticed on the cliff face and rocks.