The research project (Progetto Altipiani–Risorse) began in 1993 with the aim of analysing, evaluating, monitoring and valorising an area of eco-cultural resources spread over the Altipiano di Asiago and the neighbouring Altipiani Trentini (relating to investigations ranging from prehistoric archaeology, ethno-archaeology, archaeology of the War, actualistic archaeology). As regards “Public Archaeology” (Public Archaeology, Community Archaeology, CRM) and of “Archaeology for development” in 1999 the project created an archaeological park and numerous didactic-formative and experimental archaeology activities.
During 2009 limited excavations were undertaken in the locality of Bostel a Castelletto di Rotzo (VI) due to lack of funding.
Some areas excavated in previous years were cleaned (area D, E and house A, 1969 excavations) and structure C2 was excavated.

Excavation of structure C2
Following the opening of the trench and general cleaning, the investigation of the “storeroom/space below stairs” to the south-east continued and was completed. This structure had been partially excavated in 2007 and 2008. Sampling was undertaken on soil from occupation layers for phosphate analysis.
During the 2009 campaign a plan was drawn up regarding the work to be carried out in subsequent seasons in order to complete the research on the two structures found, C1 and C2, and guarantee an adequate preservation.

Investigation of the room south-east of structure C2
In the space between post hole USS -5107, 5106 and the dolium-hoard USS -5101, 5102, 5103, 5111 previous campaigns (cf. 2008 campaign) had identified an anomaly that was another post hole: US -5116and its fill, US 5117.

The excavation showed that this post hole was probably a support for the upper parts of the structure. Given its particular position (at the centre of the room) it must have been one of the supports for a staircase leading to the upper floor of the house. There were no finds in the fill except for a small limestone (not local) slab lying flat in the bottom of the hole. This object may be interpreted as the base on which the post rested with the aim of providing some protection for the timber from humidity (cf. “flat” stones in house ’69 and C1).