Relatively easy hike with great geologic area at the end of it ;)
Go first to Saikung where you cab take a breakfast with many options both asian and western. If you like pastry, the Wellcome next to McDo is selling some from la Rose Noire. Take bus 94. You then have a 12 km walk around the Reservoir, on a road without cars (except green taxis), mostly flat. The reward is the very interesting geologic area next to the second dam. There used to be a huge volcano here long time. There is some taxis there usually if you prefer to hike only one way.
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