Tsa tsa, stupa-shaped offerings made in brass or copper molds are a mixture of clay and the ashes of the dead. They are frequently found in the niche of a chorten or other sacred marker, like the water driven prayer wheels of Bhutan. Ladakh, India.
Visit Amchi Tsewang at Lo-Kunphen Museum and Herbarium in Lo Manthang, Mustang. Nepal.