 Nyorai mberi kweiyi ndima - Muna 1221, vaMongol vaitungamirirwa naTolui vakarwisa Merv, iyo yakapa pashure pokukombwa kwamazuva manomwe. Guta racho parakanga raparara, vaMongol vakauraya vagari vomuguta racho ndokuita varanda vanenge mazana mana vevashandi uye vana vakawanda. Munyori wenhau dzakaitika wechiArabhu Ali ibn al-Athir anoti vanhu 700 000 vakaurayiwa pakapambwa Merv nevaMongolia. VaMongol vakapisa zvivako zvakawanda zveguta racho, kusanganisira Guva raAhmad Sanjar. Maererano naIbn al-Athir, vaMongol vakapisa guta racho uye vakapisa guva raSultan Sanjar, vakachera guva rake vachitsvaka zvinhu zvinokosha. Moto wacho wakakuvadza zvikuru chivako chacho, uchiparadza mazhinji ezvidhinha zvekunze zvemausoleum uye uchikonzera kuti chivako chacho chiparare. Merv yakaramba isina vanhu vakawanda munguva yakatevera kupinda kwevaMongol uye guva racho rakaramba richiparara nemhaka yemazana emakore ekuregeredzwa. 