Maybe one of you cartographers could help me out, on page 9 of this link is a map which outlines the Imataca. Its grainy, but you can make it out. If you locate the straight line which is the border of Guyana - to the left of that are two faint yellow lines. I place LC in the crook formed by those yellow lines (Highway 10). I've looked at a few different maps and this is where it appears to be. On Google maps, the landing strip is on the other side of the road, but all seems to be outside the Imataca. Very close, but just outside. Is it possible that only a small portion of LC is within the Imataca (sure, I know its possible, but what is the reality?):

http://pdf.wri.org/gfw_vz_chapter4.pdf