LiEagle is an aerial LiDAR surveying system designed for large area and long-range 3D data collection projects. The system is designed to be mounted to a helicopter platform and features a Riegl VUX-1LR laser scanner coupled with a best-in-class IMU for increased point cloud accuracy and percision. LiEagle is well-suited for projects aiming to map terrain features beneath forest canopies and extract structural parameters from forest LiDAR data.