  NGC253 is one of the closest starburst galaxies to the Milky Way and as such
it has been studied in detail across the electromagnetic spectrum. Recent
observations have detected the first extragalactic class I methanol masers at
36 and 44 GHz and the first extragalactic HC$_3$N (cyanoacetylene) masers in
this source. Here we discuss the location of the masers with respect to key
morphological features within NGC253 and the association between the masers and
the ongoing starburst.
