What is "skilpadshek"

Skilpadshek ( Afrikaans for tortoise gate) is a border checkpoint on the South African border with Botswana, located north-west of Zeerust in North West province. The corresponding checkpoint on the Botswana side of the border is called Pioneer Gate. The Trans-Kalahari Corridor passes through Skilpadshek, and it is the western end of the N4 road, which continues in Botswana as the A2.