Designer Arta Ozola Jaunaraja
The white brick, rectangular Salacgrivas Baka (baka = lighthouse in Latvian) can be found at the mouth of the Salaca River on the Gulf of Riga in northern Latvia. It's difficult to see, but in the clouds of the stamps is a map. It was built because of the numerous sandbanks that made the Gulf of Riga dangerous for navigation. In 2014, a promenade was built by bringing stones from the sea to protect the shore from erosion. The lighthouse has been inactive since 1970.
The artist Arta Ozola-Jaunaraja has designed at least 60 stamps for Latvia Post since 1993. Some of the themes, including the Lighthouses of Latvia, were suggested by Arta herself. More of her stamps can be seen here.