[link to www.emsc-csem.org]
Magnitude ML 4.4
Region DODECANESE ISLANDS, GREECE
Date time 2013-02-21 10:18:51.0 UTC
Location 37.41 N ; 26.92 E
Depth 11 km
map [link to static3.emsc.eu]

it's Nisyros
[link to www.volcano.si.edu]
Volcano Type: Stratovolcano
Volcano Status: Historical
Last Known Eruption: 1888
The easternmost volcano of the Aegean arc forms the 9-km-wide island of Nisyros, which is truncated by a 3-4 km wide caldera. The island was constructed during the past 150,000 years, with three cone-building stages including explosive and effusive andesitic eruptions and effusive and extrusive dacitic and rhyolitic activity. The age of the caldera is variously considered to be <24,000 years before present (BP) (Keller et al., 1990) and >44,000 years BP (Limburg and Varekamp, 1991). Five large post-caldera lava domes completely fill the western part of the caldera...
map [link to geophysics.geo.auth.gr]