The cosmic web in CosmoGrid void regions
  We study the formation and evolution of the cosmic web, using the
high-resolution CosmoGrid \$\Lambda\$CDM simulation. In particular, we
investigate the evolution of the large-scale structure around void halo groups,
and compare this to observations of the VGS-31 galaxy group, which consists of
three interacting galaxies inside a large void. The structure around such
haloes shows a great deal of tenuous structure, with most of such systems being
embedded in intra-void filaments and walls. We use the Nexus+ algorithm to
detect walls and filaments in CosmoGrid, and find them to be present and
detectable at every scale. The void regions embed tenuous walls, which in turn
embed tenuous filaments. We hypothesize that the void galaxy group of VGS-31
formed in such an environment.
