Videos Tidal Bore Sup In Crocodile Infested Batang Lupar River By Standup Journal - Jul 23, 2014 1860 Global PartnerNice clip of some locals getting out and surfing a sweet tidal bore in Sri Aman. Have to give them credit for having the guts to head out into the crocodile infested water for a sup session. Location : Batang Lupar River, Sri Aman, Sarawak.