/usr/include/dune/grid/yaspgrid/ is in libdune-grid-dev 2.3.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/dune/grid/yaspgrid/grids.hh
/usr/include/dune/grid/yaspgrid/yaspgridentity.hh
/usr/include/dune/grid/yaspgrid/yaspgridentitypointer.hh
/usr/include/dune/grid/yaspgrid/yaspgridentityseed.hh
/usr/include/dune/grid/yaspgrid/yaspgridgeometry.hh
/usr/include/dune/grid/yaspgrid/yaspgridhierarchiciterator.hh
/usr/include/dune/grid/yaspgrid/yaspgrididset.hh
/usr/include/dune/grid/yaspgrid/yaspgridindexsets.hh
/usr/include/dune/grid/yaspgrid/yaspgridintersection.hh
/usr/include/dune/grid/yaspgrid/yaspgridintersectioniterator.hh
/usr/include/dune/grid/yaspgrid/yaspgridleveliterator.hh