The Krantzkloof Nature Reserve, managed by Ezemvelo KZN Wildlife, conserves 668 ha[1][2] of the Molweni (Zulu: 'mutual greetings'[3]) and Nkutu River gorges that incise the sandstone Kloof plateau[4] in KwaZulu-Natal, South Africa.

The reserve conserves coastal scarp forest, sourveld grassland, a cliff face biotope, and aquatic environments along its rivers.

This road provides access to the main Kloof Falls picnic site, from where walking trails diverge in both the upstream and downstream directions.

[10] The reserve is situated on Natal group sandstone of the Cambrian to Ordovician periods, some 490 million years old,[11] and artifacts recovered from its rock shelters indicate that it was once inhabited by early Iron Age people.

[18] Its rocky grassland areas offer protection to the Natal red rock hare, a species with declining numbers.

[24] Secretive birds like broadbill, grey cuckooshrike, Narina trogon, emerald cuckoo and wood-owl all occur, but are more likely to be heard than seen.

[22][29] The vulnerable aquatic plant Hydrostachys polymorpha is found on one of the Molweni's waterfalls, while the Bootlace lily, Drimia flagellaris, discovered in 2005, is endemic to the reserve's cliff faces.

[34] The Kloof Falls picnic site is open daily from sunrise to sunset[2] at a fee of R60 per person, or R30 per child under 12 years (Nov 2023).

[37][38] Selected areas of the gorge are accessible to rock climbers only, with the requirement that they sign a climbing register and pay the entrance fee when entering and leaving.

The Ntombeni trail passes through level grassland to arrive at a site called "The Crack" that allows vistas of the lower gorge.

The white trail winds up a steep slope, crosses Bridle Road to re-enter the reserve, and traces the escarpment edge before descending to the waterfall in the nKonka river.