Dolmen de Soto, 3000-2500 years before Christi, was discovered in the year 1922 of Armando de Soto, therefore the name of this place. It is the most important prehistoric stone monument in the province of Huelva and is at the head of the "Zancarrón ", on the property "La Lobita ", which belongs to the urban area of Trigueros. In order to view this historic monument, one either can, comes directly over a track of Trigueros, or but also over the national street of Sevilla from Huelva, in kilometre 619.

The mausoleum is like most of these buildings of similar construction, with easy rounded off interior constructions that are almost fully round, and equips which takes off very well from the surrounding lowlands. The whole construction was positioned artificially, it be become bring a remarkable accumulation of white earth from far to see, under which some added stone fragments are and must, since there is not this earth type in immediate surroundings. Only the reason for it stands is out of reddish earth, like the entire surroundings also.