The large radio lobes of radio galaxies both affect and are affected by their environment. They may be distorted by motion through an intracluster medium (e.g., Miley et al. 1972), or by an encounter with interstellar matter in the host galaxy (e.g., de Young et al. 1981), a companion galaxy (e.g., Stocke et al. 1985), or a galaxy in the process of merging with the host galaxy (e.g., van Breugel et al. 1986). In addition, impacts between jets and interstellar matter may trigger star formation in some cases (e.g., de Young et al. 1981; van Breugel et al. 1985).

To investigate the interplay between radio lobes and the interstellar matter in radio galaxies, detailed studies of the interstellar matter in nearby radio galaxies are essential. In this paper, we present a study of the interstellar matter in the nearby low luminosity radio galaxy NGC 4410A and its companions.