Activities in the Val Troncea Nature Park. Saturday 28 January, 8.30 p.m.: preparatory information meeting at the Park headquarters. Sunday 29 January, meeting at 9.00 a.m. at the Pragelato Cross-country Ski Centre: practical and informative day with Artva, shovel and probe with the Cottian Alps Parks guides Ilenia Quercia and Anna Boschiazzo. Packed lunch.