Umbhobho omkhulu wombhobho ubhekisa kumbhobho kunye nokuhamba kwejethi enkulu. Olu hlobo lombhobho ngokubanzi lufuna uyilo olukhethekileyo lolwakhiwo, olunjengombhobho opheleleyo wekhowuni, ofuna inkqubo ekhethekileyo yokuvelisa blade ukuhlangabezana neemeko.

Ukulungiselela ukwenza imibhobho emikhulu yokuhamba kwamanzi, sithenge ngokukodwa impompo enkulu yamanzi. Intloko yayo inokufikelela kwiimitha ezingama-50 kwaye inqanaba lokuhamba linokufikelela kuma-cubic metres angama-800 ngeyure, enokuhlangabezana neemeko zovavanyo lwemilomo emininzi.