Monument officials say a helicopter using a sling will carry about 225 loads of construction materials into the canyon for the project over the next few days. Each load weighs about 1,000 pounds.
Another 150,000 pounds of dirt and rock were delivered during a three-day operation in October. This week’s operation is expected to wrap up on or before Saturday, weather permitting.
For safety reasons, officials say part of the main loop trail will be closed.