"Layers >> Add Vector Layer" only works with vectorvector data. However, you have Arc/INFO binary GRIDs, which are rasters not vectors.
An Arc/INFO binary GRID is a directory of related files stored in a parent directory (workspace) with an INFO database directory:
GDAL can read Arc/INFO binary GRIDs either by using the GRID directory name or GRID/hdr.adf (or w001001.adf)
You can create a virtual mosaic by creating a list of all the GRID directories (excluding the INFO directory) and using the gdalbuildvrt command.
For absolute paths:
ls -d /path/to/Data-folder/be_rasters/* | grep -i -v info > gridlist.txt Or to use relative paths:
cd /path/to/Data-folder/be_rasters ls -d * |grep -i -v info > gridlist.txt Then:
gdalbuildvrt -input_file_list gridlist.txt your_new_mosaic.vrt 