[OSGeo Africa] Use of remote-sensing technology to locate old burial sites ?

[Chris]

    Dear Listees ,

    I know that there are a lot of really clued up people on the list.
    I am hoping someone can suggest / help / provide some insight into the 
    following scenario.

    Someone is trying to locate an historical site of mass burial ( about 180 
    years ago ) The general area is known but the exact location of the mass 
    burial site is lost. Apparently earlier writers who visited the scene 
    describe a location based on vegetation ( the area has changed a lot over 
    the years )

    Is there any way using remote-sensing / any other form of geophysical 
    technology / methodology to attempt a location discovery ?

    I am guessing that the disturbed soil may have different properties that 
    might be picked up by some form of specialised imageing --hyperspectral / 
    multispectral  ( something else ? )

    Would something like a Landsat 8 image be useable ? Or would the area 
    have to be flown by an aerial borne sensor ?  The battle site is easily 
    located but the mass burial site would obviously be smaller ( not sure of 
    exact dimensions but probably something along the lines of half an 
    olympic sized pool )

    Finding the site would be of important historical significance.

    Any and all suggestions welcomed

    Thanks


    CM