This small inlet in the Sound of Harris resembles the head of a pterodactyl swooping towards Borghasdal (Borrisdale). The name presumably has the same origin as the one that Iain mac an Tailleir supplies for the place in Lochs, Lewis:
Eishken (Lewis), Éisgean. This Norse name may contain “ash tree”.
In the censuses it tends to be written ‘Esgein’ but, as can be seen from this entry for the Lewis location the preferred spelling is Eisgein whilst the RCAHMS entry provides ‘Isginn’ as the preferred alternative.
It would be lovely to know what use has been made over the centuries of this most South-Easterly haven in the Sound but looking at the old maps the settlement of Srannda (Strond) appears centralised upon the port suggesting that it may have had an importance that its small size might easily lead one to overlook today.