Large Devilthorn or Devil's Thorn or Boot Protector Plant * Elandsdoring * Dicerocaryum Eriocarpum

https://www.inaturalist.org/taxa/338775-Dicerocaryum-eriocarpum/browse_photos

Sources:

(*) https://www.inaturalist.org/taxa/338775-Dicerocaryum-eriocarpum