One of the Heath tiles within the circle that have a Coniferous one East of it, yes.
There are usually two or 3 snares lying about in different locations within the tile (but not necessarily close to the border). There are also some bird feathers around the snares. They can be tricky to find, although Heath is a reasonable terrain type (I don't like to search for anything in tiles with a lot of spruce in them due to the low visibility).
Either you've missed that particular tile, or you've checked it but not where the there are snares. Make sure you search when the visibility is good.