Masse (a small village of Siviano) is located on the road to Monte Isola passing through Senzano.
It is a conglomeration of farm houses of early medieval origin with a small church dedicated to St. Roch and St. Pantaleon the doctor, invoked against epidemics.
The present church, originally with a gabled façade, oeil-de-boeuf and a gabled roof (15th Century), was a place of worship for the population who were unable to reach the parish church for climatic and work reasons. The 17th Century façade shows a quadrangular pronaos ending in a curved cyma moulding and closed by an iron gate (17th Century). The pronaos is formed by two columns with Sarnico stone Doric capitals resting on a pedestal, while behind the façade there are two pillar strips. On the left side there is the bellfry with two small bells. After passing through the Sarnico stone portal, surmounted by a small sculpture of St. Roch, you enter in the single nave covered with a barrel vault and divided into two bays marked by pilar strips. To the left there is a small 20th Century walnut pulpit. There are frescoes on the side walls and on the vault featuring St. Roch in the woods with angels and dog, St. Roch heals a cardinal from the plague, St. Roch comforted by an angel in prison, St. Roch in glory, St. Maurus saves St. Placid, Martyrdom of St. Firmus attributable to the workshop of Domenico Voltolini from Iseo. The quadrangular sanctuary is slightly raised. The black marble altar resting on a predella boasts a pink-veined marble frontal, bordered by two small columns which enclose two large scrolls, with a large frame and geometric decorations (17th Century). The elevation is framed by a 17th Century gilded wood architecture, with inlaid predella.
The decorations consist of two bases with angel heads on which columns with Corinthian capitals rest.
The broken cyma moulding on the front features sculptures of God the Father and the Holy Spirit between two Angels.
The niche is the seat of a beautiful wooden statue of St. Roch dated to the end of the 16th Century.
The early 18th Century organ is positioned on the inside façade in a wooden case resting on the choir stall.