A woman on a sienna and dark brown background holding her legs up as shields in green and brown.
The way that this drawing was highlights the angles of the figure, given it the appearance of a rock, been accurate with the title.
Gustavo Montoya was an artist with artistic formation from the beginning of 20th century. He is known for his paintings and engravings of children, still lives and city landscapes, always taking the Mexican tradition. In his work the line is quite important.