[4] The reason for Weld exploring the area was his search for an overland route between Nelson and Canterbury for driving sheep.
[5] A broad moraine with a number of tarns (i.e. mountain pools) forms the downstream side of the lake.
This route follows the Wairau River to Island Saddle, which is New Zealand's highest legal road at 1,347 metres (4,419 ft).
This road is suitable for four-wheel drive vehicles only, has seasonal access restrictions, and a toll applies that is payable at Rainbow Station.
[7] The Maling Pass car park in close proximity to Lake Tennyson is the most common start point for those who want to explore the St James Cycle Trail.