Location, spot, or destination (latitude/longitude) that can be stored in memory to be recalled and used at a later time for navigation purposes Simply think of it as an electronic address
A waypoint is a 3D point which can be given a name and location either prior to field work or in the field Waypoints are useful for navigation purposes an can be used as a reference for a particular site This makes returning for a particular site This makes returning to the same site possible at a latter date
An intermediate point on a route Usually defined by longitude and latitude values Often a waypoint's description includes a place name E G Detroit River Light W 83° 08' 30' N 42° 00' 06"
A checkpoint used as a point of reference for GPS Whiteout: A condition of zero or extremely limited visibility caused when fog or thick clouds or rapidly falling snow creates a situation where light from above is the same as the light being reflected off the snow so that there are no shadows and no visible horizon