This porphyry trough hewn from a stone block with the year 1868 engraved on it used to stand near Hotel Adler and was a place for horses to drink. At four metres in length, it is the largest of some 50 porphyry troughs that used to be in Gröden; it has been standing in the museum garden since 1960. It is attributed to the stonemason Scola Petru from Falcade, who founded a stonemason's business in Pontives.

This revolving millstone was found during excavation work for a private house in St. Ulrich and dates back to the early Iron Age. This type of millstone follows on from the earlier hopper and lever type and therefore has the same function as the typical Mediterranean millstone. However, it has side grooves for inserting wooden levers, which made turning the stones a lot easier.

This typical Mediterranean millstone made from local porphyry dates back to pre-Roman times and was found in various pieces at Col de Flam. Small quantities of grain (barley, oats) were shaken through the hole and milled when coming into contact with a flat, fixed lower stone. The upper stone was turned with a wooden handle, while the lower stone has not been preserved.

These two grindstones made of volcanic stone from Col de Flam excavation site were used for milling grain. Grindstones were pushed back and forth across a fixed grinding stone. This spherical grindstone exploded after being heated to a high temperature. This is a sign that a large blaze took place in the house that it was kept in.

Five niches were carved in a long stone block to shell grain. The truss made of wooden poles has not been preserved. The stone trough was unearthed during building work near today's St. Anton church, where a watercourse used to flow from Grödnerbach stream (Lad. Derjon).