Ann: Mothae Restart and New Marketing Channel, page-117

Agreed 1Sharetrader - L259 is one huge circular geomorphologic feature which needs to be explained and evidence found to substantiate the model on how it formed. One scenario, a gigantic volcanic explosion would best explain this feature, where the vent, exhausted of its contents left one huge hole or caldera.We just need to determine by drilling the side walls whether or not there is evidence of this event. If yes we need to determine what exists at depth to verify any potential. If not a kimberlite intrusion, then what does this anomaly represent??