 Interior of a small granite cave near Vyborg. Russia, July 20, 2024
 Granite rocks and a boat in Vyborg Bay from Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Vyborg Bay from Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Granite boulders in Vyborg Bay near Stony Trail (Kamenistaya Tropa) in Kivi Park south from Chulkovo, west from Vyborg. Russia, July 27, 2024
 Granite stones on a beach of Vyborg Bay near Stony Trail (Kamenistaya Tropa) in Kivi Park south from Chulkovo, west from Vyborg. Russia, July 27, 2024
 Large granite stone in Vyborg Bay near Stony Trail (Kamenistaya Tropa) in Kivi Park south from Chulkovo, west from Vyborg. Russia, July 27, 2024
 Large granite boulders in Vyborg Bay near Stony Trail (Kamenistaya Tropa) in Kivi Park south from Chulkovo, west from Vyborg. Russia, July 27, 2024
 Stony beach of Vyborg Bay near Stony Trail (Kamenistaya Tropa) in Kivi Park south from Chulkovo, west from Vyborg. Russia, July 27, 2024
 Cave deposits in Cathedral Cave in Onondaga Cave State Park. Leasburg, Missouri, September 24, 2005
 Stones scattered on a granite base on a beach of Vyborg Bay on Storozhok Peninsula near granite quarry near Stony Trail (Kamenistaya Tropa) in Kivi Park south from Chulkovo, west from Vyborg. Russia, July 27, 2024
 Pine trees growing among granite stones on a beach of Vyborg Bay on Storozhok Peninsula near granite quarry near Stony Trail (Kamenistaya Tropa) in Kivi Park south from Chulkovo, west from Vyborg. Russia, July 27, 2024
 Old railroad path from Toksovo train station to a military ammunition storage near Kavgolovskoe Lake in Toksovo, north from Saint Petersburg. Russia, July 14, 2017
 Powder bunker of Vyborg Fortress. Russia, July 20, 2024
 Shores of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Gate of a powder bunker of Vyborg Fortress. Russia, July 20, 2024
 Buildings of Vyborg Historical Power Station at 20A Morskaya Naberezhnaya Street. Vyborg, Russia, August 5, 2024
 Undeground shelter in Fort No. 1 (Stronghold Liter B) near Vyborg. Russia, July 20, 2024
 A house at 40 Geroev Street in Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Stone wall of Fort No. 1 (Stronghold Liter B) near Vyborg. Russia, July 20, 2024
 Stone stairs of Fort No. 1 (Stronghold Liter B) near Vyborg. Russia, July 20, 2024
 Examining a granite cliff during a geological tour near Vyborg. Russia, July 20, 2024
 Various crustose lichens on a granite shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Common groundsel (Senecio vulgaris) on granite of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Physcia lichen on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Rosette lichen Physcia on a granite shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Close-up of green moss on granite shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Texture of green moss on granite shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Stone steps of grand stairs of Fort No. 1 (Stronghold Liter B) near Vyborg. Russia, July 20, 2024
 Brown crustose lichen on a granite shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Xanthoparmelia and Rhizocarpon geographicum lichens on a granite shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Rapakivi granite with large round crystals on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Close-up of rosette lichen Physcia on a granite shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Flowers of stonecrop (Sedum, Hylotelephium telephium(?)) on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Grey crustose lichen Aspicilia on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Yellow map lichen (Rhizocarpon geographicum) on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Grey lichen on a granite stone in Paltsevo Rock Massif near Svetogorsk Highway near Vyborg. Russia, July 20, 2024
 Rock shield lichen (Xanthoparmelia) on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Rosette of yellow map lichen (Rhizocarpon geographicum) on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Growth of yellow map lichen (Rhizocarpon geographicum) on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Resupinate polypore mushroom on a fallen spruce branch in a rocky mountainous area around Paltsevo, near Vyborg. Russia, July 20, 2024
 Ammunition storage over Obvodny Canal from Komsomola Street. Kronstadt (part of Saint Petersburg), Russia, February 11, 2013
 Small stalactite formed of calcium salts deposited by dripping water in Fort No. 1 (Stronghold Liter B) near Vyborg. Russia, July 20, 2024
 In Cathedral Cave in Onondaga Cave State Park. Leasburg, Missouri, September 24, 2005
 Cathedral Cave in Onondaga Cave State Park. Leasburg, Missouri, September 24, 2005
 Circular round patch of yellow map lichen (Rhizocarpon geographicum) on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Ruins of a bridge to Kubensky Island near Stony Trail (Kamenistaya Tropa) in Kivi Park south from Chulkovo, west from Vyborg. Russia, July 27, 2024
 Ruins of a house at the beginning of Stony Trail (Kamenistaya Tropa) near Kubenskoe in Kivi Park south from Chulkovo, west from Vyborg. Russia, July 27, 2024
 Rock climbing on cliffs of Paltsevo Rock Massif near Svetogorsk Highway near Vyborg. Russia, July 20, 2024
 Rosette of crustose lichen Lecanora muralis (Protoparmeliopsis muralis) on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Texture of elegant sunburst lichen Rusavskia elegans (formerly Xanthoria elegans) on a granite shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Elegant sunburst lichen Rusavskia elegans (formerly Xanthoria elegans) on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Close-up of crustose lichen Lecanora muralis (Protoparmeliopsis muralis) on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Folious lichens on a stone on Storozhok Peninsula near granite quarry near Stony Trail (Kamenistaya Tropa) in Kivi Park south from Chulkovo, west from Vyborg. Russia, July 27, 2024
 Close-up of elegant sunburst lichen Rusavskia elegans (formerly Xanthoria elegans) on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Yellow map lichen (Rhizocarpon geographicum) and another crustose yellow lichen on a granite boulder on shore of Gvardeysky Island. Vyborg, Russia, July 20, 2024
 Tram landing from a cave of Sutro Baths. San Francisco, California, March 14, 2024
 Underground river Poneretka emerging from a cave and meeting Msta River near Borovichi. Novgorod Region, Russia, July 3, 2016
 Mouth of underground river Poneretka emerging from a cave and meeting Msta River near Borovichi. Novgorod Region, Russia, July 3, 2016
 Stream of underground river Poneretka emerging from a cave and meeting Msta River near Borovichi. Novgorod Region, Russia, July 3, 2016
 Underground river Poneretka emerging from a cave and meeting whitewater area of Msta River near Borovichi. Novgorod Region, Russia, July 3, 2016
 Courtyard at 1 Nekrasova Street. Vyborg, Russia, August 5, 2024
 Courtyard at 39 Kutuzova Street. Vyborg, Russia, August 5, 2024
 Apartment building at 8 Chernomorskiy Pereulok. Vyborg, Russia, August 5, 2024
 Neoclassical building at 31 Kutuzova Street. Vyborg, Russia, August 5, 2024
 Graffiti in courtyard at 39 Kutuzova Street. Vyborg, Russia, August 5, 2024
 Apartment building at 10 Pervomayskaya Street. Vyborg, Russia, August 5, 2024
 Gate of a building at 3 Nekrasova Street. Vyborg, Russia, August 5, 2024
 Corner of a house at 10 Pervomayskaya Street. Vyborg, Russia, August 5, 2024
 Apartment building at 11 Akulova Street. Vyborg, Russia, August 5, 2024
 Apartment building at 4 Nekrasova Street. Vyborg, Russia, August 5, 2024
 Cellars of Groel s House at 12 Podgornaya Street. Vyborg, Russia, August 5, 2024
 Old coutyard of a brick house at 12 Krasina Street. Vyborg, Russia, August 5, 2024
 Gate of apartment building at 7 Rzhevskiy Pereulok. Vyborg, Russia, August 5, 2024
 Corner of JSC Untamo house at 3 Suvorova Prospekt. Vyborg, Russia, August 5, 2024
 Flour silos of bread baking factory. Vyborg, Russia, August 5, 2024
 Ruins of Old Cathedral at 6 Storozhevoy Bashni Street. Vyborg, Russia, August 5, 2024
 Littered entrance of a house at 20 Morskaya Naberezhnaya Street. Vyborg, Russia, August 5, 2024
 The oldest dwelling house (1583) at 13A Krepostnaya Street. Vyborg, Russia, August 5, 2024
 Old service building near a brick house at 12 Krasina Street. Vyborg, Russia, August 5, 2024
 Graffiti on Massinen s residential building at 15 Leningradskoe shosse. Vyborg, Russia, August 5, 2024
 Grey and white street cat in a courtyard at 7 Rzhevskiy Pereulok. Vyborg, Russia, August 5, 2024
 Entrance of Massinen s residential building at 15 Leningradskoe shosse. Vyborg, Russia, August 5, 2024
 Coutyard of Massinen s residential building at 15 Leningradskoe shosse. Vyborg, Russia, August 5, 2024
 XVI century Dwelling House at 8 Krepostnaya Street in Old City. Vyborg, Russia, August 5, 2024
 Art Nouveau apartment building (1904) at 6 Pervomayskaya Street. Vyborg, Russia, August 5, 2024
 Houses from Saint Olaf Tower of Vyborg Castle. Vyborg, Russia, May 27, 2011
 The city from Saint Olaf Tower of Vyborg Castle. Vyborg, Russia, May 27, 2011
 Old City from Saint Olaf Tower of Vyborg Castle. Vyborg, Russia, May 27, 2011
 Old houses from St. Olaf Tower of Vyborg Castle. Vyborg, Russia, February 14, 2013
 Old city from St. Olaf Tower of Vyborg Castle. Vyborg, Russia, February 14, 2013
 Old City from Saint Olaf Tower of Vyborg Castle. Vyborg, Russia, May 27, 2011
 Old houses from Saint Olaf Tower of Vyborg Castle. Vyborg, Russia, May 27, 2011
 Vyborg Castle from Petrovsky Bridge. Vyborg, Russia, June 21, 2014
 Old granite walls behind Vyborg Castle. Vyborg, Russia, September 14, 2013
 Vyborg Castle from Komsomol-40 Embankment. Vyborg, Russia, February 14, 2013
 Area in old city from St. Olaf Tower of Vyborg Castle. Vyborg, Russia, February 14, 2013
 Roofs of Old City from Saint Olaf Tower of Vyborg Castle. Vyborg, Russia, May 27, 2011
 Roofs of the city from Saint Olaf Tower of Vyborg Castle. Vyborg, Russia, May 27, 2011
 Roofs of Old City from Saint Olaf Tower of Vyborg Castle. Vyborg, Russia, May 27, 2011
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