grotto of lermontov in pyatigorsk, russia. old landmark of pyatigorsk installed in 1831

architecture attraction building caucasian caucasus cave cavern city culture destination europe grot grotto historical krai landmark landscape landscaped landscaping lermontov mineral monument mountain nature nice old park place poet pyatigorsk resort russia russian scene scenery scenic sightseeing stavropol stone summer tourism tourist town travel tree tsvetnik urban vacation view waters