In the south west part of the crater, new rocks of the Karoo Supergroup covered the dome structure, while other sediments filled in the broad basin around the dome.
Hile dzongeni vupela dyambu bya xirhengele lexi, maribye yantshwa ya Karoo Supergroup aya funengete xivumbeko xa dome, laha masalela yan'wana aya tatile hinkwako etlhelo ka dome.