/usr/share/dune-grid/grids/starcd/withprism.vrt is in libdune-grid-dev 2.5.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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2 2 0 0
3 2 2 0
4 0 2 0
5 0 0 1
6 2 0 1
7 2 2 1
8 0 2 1
9 1 0 2
10 1 2 2
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