Travelling east along the Langkloof, he made an excursion lasting a week on horseback to Toorwater at the point where the Olifants River cuts through the Swartberg, returning over Antoniesberg and the Kouga Mountains and meeting up with his wagon, which had gone ahead, on 1 March. When he reached Jagersbos three days later, he turned south over the Kareedouwberg to the Moravian Mission station at Koksbosch (which is now known as Clarkson) and went on to Driefontein. He spent 3 weeks in this locality, referring to it as Tsitsikamma, before moving across the Gamtoos River and on to Uitenhage where he stayed with the pharmacist and plant collector Joachim Brehm. Here he sold his wagon and oxen to a Dr. John Jones who farmed north of the Groot Winterhoek Mountains. From Uitenhage he made several outings to Swartkops, Bethelsdorp, Port Elizabeth and Cape Recife, visiting the botanist and retired major Friedrich von Buchenröder on the Swartkops River. While in Port Elizabeth, Krauss heard many reports about Natal that piqued his interest. He determined to go there, but first ventured north into the Karoo. He followed the course of the Coega River to Elandshoorn and ascended the Groot Winterhoekberge. From there he went on to the Gamtoos River, following it to where it breaks through the Groot Winterhoekberge as the Grootrivier, and further north to the Springbokvlakte. At this point grazing was so poor that he returned on 20 May to Dr. Jones' farm in the Groot Winterhoekberge. On 2 June 1839 he sailed from Port Elizabeth to Natal on the "Mazeppa". Krauss enjoyed the company of 2 other naturalists for the eight-day voyage to Port Natal - the Swede Wahlberg and the Frenchman Adulphe Delegorgue. The first significant zoological exploration of Natal, with its adjacent territories of Kaffraria to the south and Zululand to the north, can be dated from 1839 with their arrival. Krauss stayed in a reed hut at Congella, going on daily excursions into the bush or along the seashore. He was delighted with the variety of species that he encountered.