Nepal is a Hindu dominated country so most of the rituals follow core Hindu tradition of cremation. The body will be transported by an ambulance and cremated on the banks of the holy River.
The corpse will be wrapped in a white/red cotton cloth. A garland of some flowers will be stretched along the length of the body and then a mourner will light the funeral pyre. At the end the ashes will be gathered and put into an urn.
This is totally different than what most westerners may think about it. Machine cremation may not be available for all the time and it will be done on an open-public area. The whole process will take approximately 4 hours but sometime we have to be in a queue and wait for additional hour or two.