That is correct, the gap is the space between the current known mineralization near surface and the deep showings that intersect the RLM. Ironically they are actually drilling upwards to help fill the gap. There is a great PDF in the following news release on page 3. Of course this was before they found 007. The gap is clearly identified with question marks. Happily for us even the author of the 43-101 believes the gap will be full of gold.

This interpretation has significant implications regarding the depth potential of the newly discovered mineralization at the Hinge and 007 as these structures within the RLM contain gold mineralization from surface to over 5000 feet below surface (7000 feet down the dip of the veins). The RLM mineralization is open at depth below 5000 feet.

http://sangoldcorp.com/assets/files/080915_PressRelease.pdf