The village of Madan was once the center of Armenia’s Greek community all the way up until the collapse of the Soviet Union. In 1763 some 800 Greek families from Kyumushana, Turkey moved to the Lori region. They built a silver foundry in Akhtala and in 1770 they constructed copper foundries in Akhtala and then in Shamlugh, a village 7 miles (~11km) to the northeast. Ever since then generations of Greeks have worked in the Alaverdi copper mines. Today, only 75 people remain in the village – and just 19 of them are Greeks.
What you see here is the ruin of the main church of the Greek community. I unfortunately could not find any more information about it. Interestingly its front facade is constructed from red and black tuff stone, which shows that they borrowed this style from Armenian construction. I found this interesting article if you want to learn more about the Greek community in Armenia: https://iwpr.net/global-voices/armenias-disappearing-greeks