1. Bossons Glacier, also known as Glacier des Bossons, is one of the largest glaciers in the Chamonix Valley of the French Alps. It flows from the Mont Blanc massif, which is the highest mountain in the Alps. The glacier is over 7 kilometers long and covers an area of about 10 square kilometers. It can be accessed by a short hike from the town of Chamonix.

One interesting fact about Bossons Glacier is that it has been receding in recent years due to climate change. As a result, the glacier has been shrinking and losing mass at a rapid pace. Despite this, it remains a popular tourist attraction for those visiting Chamonix.

2. The glacier itself does not have specific working hours as it is a natural formation, but guided tours and excursions to the glacier are typically available during the summer months when the weather is more favorable. For more information on guided tours and excursions, you can contact local tour operators in Chamonix.

3. There is no entrance fee to visit Bossons Glacier itself, as it is a natural attraction. However, if you choose to take a guided tour or excursion to the glacier, there may be a fee associated with that. Transportation to the glacier can be arranged through local tour operators or by renting a car and driving to the trailhead. Additionally, there may be public transportation options available from Chamonix to the glacier.