It owes its origin to the access road to the "Mamohale tunnel" (May 1991), which was the first adit drive for the Lesotho Highlands Water Project.

This adit covers 22 km (14 mi) from the source at Katse Dam to the As River outfall near Clarens, Free State.

Bird species found in the park include:[1] Wild flowers and shrubs recorded at Ts'ehlanyane National Park on the Matsa-Mararo route via Lets'a-le-ts'o and the lower bridle path (4 × 4 track) that leads to Holomo Pass(* = exotic) Indigenous trees as seen at the campsite, on the lower Lets'a-le-ts'o path en route to Matsa-Mararo falls and the lower bridle path (4x4 track) that leads to Holomo Pass Other trees expected to occur in the area include: Ferns and fern allies Underneath shade of cheche forest, an abundance of ferns occur: Polystichum spp.

In exposed areas on rocky mountain slopes, typical poikylohydrous species evident like the resurrection fern and Cheilanthes eckloniana.

The route passes through the village of Khabo and parallels the Hlotse river along the Holomo valley until it reaches the park entrance gate.