1. A method, comprising: receiving a location indicative of a human presence at a location in an obscured environment; establishing a virtual location marker in a position that is visually available to a person wearing a head-worn computing system, wherein the virtual location marker provides an indication of the location in the obscured environment; and generating an avatar as a representation of the human presence and presenting the avatar in a field of view of the head-worn computing system, wherein the presentation of the avatar is positioned in the field of view by visually associating the avatar with the virtual location marker such that the avatar appears to remain at the virtual location marker location, as perceived by a person wearing the head-worn computing system, independent of the head-worn computing system's viewing angle.