The small pilgrimage church Unsere liebe Frau im Walde stands on the Schmelz, in middle of the wooded Martell Valley, where a mine is mentioned as early as 1448. This charming miners' chapel was donated in 1711 by the Counts Hendl from Kastelbell, sold in 1816 due to famine, extended with a tower in 1856 and rebuilt in Neo-Gothic style in 1894. Until after the Second World War, the people of Martell moved in procession from the parish church in the main village to the chapel on the Schmelz for the annual celebration of the church consecration. The day of patron saints is on first Sunday in July, around the Visitation of Mary (2nd July), with a field mass and sermon by the erratic block next to the church.