Question:
Helloween are a German power metal band founded in 1984 in Hamburg, Northern Germany by members of bands Iron Fist and Gentry. Its first line-up consisted of singer and rhythm guitarist Kai Hansen, bass guitarist Markus Grosskopf, lead guitarist Michael Weikath, and drummer Ingo Schwichtenberg. After the release of a self-titled EP and their debut album Walls of Jericho in 1985, it expanded into a quintet with the addition of singer Michael Kiske, Hansen choosing to focus on guitar instead. Under this line-up, they released the Keeper of the Seven Keys albums (1987 and 1988), which established Helloween as a notable heavy metal band and led to the creation of the power metal subgenre.
The year 2000 saw the release of The Dark Ride, a more experimental and darker album than their previous releases. It came complete with downtuned guitars and a gruffer singing style from Deris. Immediately following the tour, Helloween parted ways with guitarist Roland Grapow and drummer Uli Kusch. One version of events states that Weikath, Deris, and Grosskopf felt that Kusch and Grapow, in particular, were spending more time on and paying more attention to their new side-project, Masterplan (Grapow's output on Helloween albums had dropped to barely one song per album by that point); since the others believed that Kusch and Grapow were not one hundred percent dedicated to Helloween, they were dismissed.  They were replaced by guitarist Sascha Gerstner (ex-Freedom Call, Neumond) and drummer Mark Cross (ex-Metalium, Kingdom Come, At Vance, Firewind), culminating with the recording of another studio album, titled Rabbit Don't Come Easy, in 2003. The band met Sascha via a recommendation by producer Charlie Bauerfeind. According to Grosskopf, one day he was recording something with Freedom Call "and later on we called him up and he went to first meet Weiki because it was very important that Weiki finds a player that he can play with and also communicate and understand. [...] So we got him on the island where we recorded and let him hang out with us a little and then he decided 'Good, let's go'." Later in 2012, on an interview with Metal Shock Finland's Chief Editor, Mohsen Fayyazi, Roland stated:  Cross could not finish the album due to mononucleosis, completing only two tracks; the drum tracks were completed by Motorhead's Mikkey Dee. Stefan Schwarzmann, former drummer of Running Wild and Accept would shortly thereafter take over the drumming duties. Despite a somewhat tepid response to the album, Helloween nonetheless completed a successful world tour, highlighted by the return of classic songs such as "Starlight", "Murderer", "Keeper of the Seven Keys" and "How Many Tears" to the setlist. Additionally, the band toured the United States for the first time since 1989, playing to sold-out crowds at nearly every venue.
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The year 2000 saw the release of The Dark Ride, a more experimental and darker album than their previous releases.

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Mountain Jews or Caucasus Jews also known as Juhuro, Juvuro, Juhuri, Juwuri, Juhurim, Kavkazi Jews or Gorsky Jews (Azerbaijani: Dag Y@hudil@ri, Hebrew: yhvdy qvvqz Yehudey Kavkaz or yhvdy hhrym Yehudey he-Harim, Russian: Gorskie evrei, translit.
Mountain Jews are considered, by some, to be of Sephardic lineage; this however is a misnomer as they are neither Sephardim (from the Iberian Peninsula) nor Ashkenazim (from Germany and Eastern-Europe) but rather come directly by way of Persia. Mountain Jews tenaciously held to their religion throughout the centuries, developing their own unique traditions and religious practices. Mountain Jewish traditions are infused with teachings of Kabbalah and Jewish mysticism.  Mountain Jews have traditionally maintained a two-tiered rabbinate, distinguishing between a rabbi and a "dayan." A "rabbi" was a title given to religious leaders performing the functions of liturgical preachers (maggids) and cantors (hazzans) in synagogues ("nimaz"), teachers in Jewish schools (cheders), and shochets. A Dayan was a chief rabbi of a town, presiding over beit dins and representing the highest religious authority for the town and nearby smaller settlements. Dayans were elected democratically by community leaders.  The religious survival of the community was not without difficulties. In the prosperous days of Jewish Valley (roughly 1600-1800), the spiritual center of Mountain Jews centered on the settlement of Aba-Sava. Many works of religious significance were written in Aba-Sava. Here, Elisha ben Schmuel Ha-Katan wrote several of his piyyuts. Theologist Gerhson Lala ben Moshke Nakdi, who lived in Aba-Sava in 18th century, wrote a commentary to Mishneh Torah of Maimonides. Rabbi Mattathia ben Shmuel ha-Kohen wrote his kabbalistic essay Kol Hamevaser in Aba-Sava. With the brutal destruction of Aba-Sava (roughly 1800), however, the religious center of Mountain Jews moved to Derbent.  Prominent rabbis of Mountain Jews in the nineteenth century included: Rabbi Gershom son of rabbi Reuven of Qirmizi Q@s@b@ Azerbaijan, Shalom ben Melek of Temir-Khan-Shura (modern Buynaksk), Chief Rabbi of Dagestan Jacob ben Isaac, and Rabbi Hizkiyahu ben Avraam of Nalchik, whose son Rabbi Nahamiil ben Hizkiyahu later played a crucial role in saving Nalchik's Jewish community from the Nazis. In the early decades of the Soviet Union, the government took steps to suppress religion. Thus, In the 1930s, the Soviet Union closed synagogues belonging to mountain Jews. Same procedures were implemented on other ethnicities and religions. Soviet authorities propagated the myth that Mountain Jews were not part of the world Jewish people at all, but rather members of Tat community that settled in the region. Soviet anti-Zionism rhetoric was intensified during Khrushchev's rule. Some of the synagogues were later reopened in the 40's. The closing of the synagogues in the 30's was part of communist ideology, which resisted religion of any kind.  At the beginning of the 1950s, there were synagogues in all major Mountain Jewish communities. By 1966, reportedly six synagogues remained; some were confiscated by the Soviet authorities. While Mountain Jews observed the rituals of circumcision, marriage and burial, as well as Jewish holidays, other precepts of Jewish faith were observed less carefully. The community's ethnic identity remained unshaken despite the Soviet efforts. Cases of intermarriage with Muslims in Azerbaijan or Dagestan were rare as both groups practice endogamy. After the fall of the Soviet Union, Mountain Jews experienced a significant religious revival, with increasing religious observance by members of the younger generation.

Do the six synagogues still remain today?