What is valletuna?

As an AI language model, I cannot provide reliable information about Valletuna. It is possible that you meant Vallentuna, which is a municipality in Stockholm County, Sweden. Vallentuna is known for its natural beauty, with lakes, forests, and parks scattered throughout the area. The main town of Vallentuna has a population of around 15,000 people and offers amenities such as shops, restaurants, and cafes. The municipality is also home to ancient Viking burial grounds, which are popular tourist attractions.