/usr/include/dune/geometry/ is in libdune-geometry-dev 2.2.1-2ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/dune/geometry/generalvertexorder.hh
/usr/include/dune/geometry/genericgeometry/
/usr/include/dune/geometry/genericgeometry/cachedmapping.hh
/usr/include/dune/geometry/genericgeometry/codimtable.hh
/usr/include/dune/geometry/genericgeometry/conversion.hh
/usr/include/dune/geometry/genericgeometry/cornermapping.hh
/usr/include/dune/geometry/genericgeometry/geometry.hh
/usr/include/dune/geometry/genericgeometry/geometrytraits.hh
/usr/include/dune/geometry/genericgeometry/hybridmapping.hh
/usr/include/dune/geometry/genericgeometry/mapping.hh
/usr/include/dune/geometry/genericgeometry/mappingprovider.hh
/usr/include/dune/geometry/genericgeometry/matrixhelper.hh
/usr/include/dune/geometry/genericgeometry/maximum.hh
/usr/include/dune/geometry/genericgeometry/referencedomain.hh
/usr/include/dune/geometry/genericgeometry/referenceelements.hh
/usr/include/dune/geometry/genericgeometry/subtopologies.hh
/usr/include/dune/geometry/genericgeometry/topologytypes.hh
/usr/include/dune/geometry/genericgeometry/traceprovider.hh
/usr/include/dune/geometry/mockgeometry.hh
/usr/include/dune/geometry/quadraturerules/
/usr/include/dune/geometry/quadraturerules.hh
/usr/include/dune/geometry/quadraturerules/cube_imp.hh
/usr/include/dune/geometry/quadraturerules/gaussquadrature.hh
/usr/include/dune/geometry/quadraturerules/genericquadrature.hh
/usr/include/dune/geometry/quadraturerules/jacobi_1_0_imp.hh
/usr/include/dune/geometry/quadraturerules/jacobi_2_0_imp.hh
/usr/include/dune/geometry/quadraturerules/lobattoquadrature.hh
/usr/include/dune/geometry/referenceelements.hh
/usr/include/dune/geometry/topologyfactory.hh
/usr/include/dune/geometry/type.hh
/usr/include/dune/geometry/typeindex.hh