Trumao is the name of two hamlets (Spanish: caserío) in Chile each located in front of the other on the shores of Bueno River.

Beauchef noticed the local Mapuche-Huilliche attended church and had a command of Spanish enough to communicate.

He was received in friendly terms and helped to cross the river by locals who also put at his disposal bullock carts.

[2] After his crossing at Trumao the small patriot army continued south achieving a victory over the royalist at the Battle of El Toro.

Trumao on the north side of the river had by 1899 a public school, a church or mission and a telegraph.