Thomas Rodda drives a shuttle from Rotorua to local sites and was taking passengers to Wai-O-Tapu when he saw the mud spurting into the air.
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Emergency services were called to an incident on Sunday evening.
HopeWalk Rotorua held a picnic in Kuirau Park today to raise awareness of suicide prevention.
Voting is open until December 14 for this year's Rotorua Christmas Lights Trail.