Formerly Ellisras, it is a low lying area North-East of Kiesel. Afrikaans for 'hook-bush pan', the name refers to the many thorny bushes found there, with recurved thorns!
References
https://travelingluck.com/Africa/Namibia/Omaheke/_3357001_Haakbospan.html
Haakbospan is a pan in Omaheke, Namibia, Africa.