Graciosa is a mid-Pleistocene to Holocene volcanic island that lies in a complex plate boundary between the North American. Eurasian. and Nubian plates. Large fault scarps displace the oldest (Middle Pleistocene) volcanic units. https://www.nacrack.com/hot-savings-HiBoost-Home-15K-Smart-Link-F20G-5S-IoT-limited-super/