Macijin, La Serpentina (wanda aka fi sani da Kogin Serpentina) tafki ne mai girman kadada 28 (haik 11) a cikin Hyde Park, London, wanda aka kirkira a cikin 1730 kuma ya ɗauki sunan daga asalin macijin sa na kwana.
A cikin 1730 Sarauniya Caroline, matar George II, ta ba da umarnin gina madatsun ruwa a Kogin Westbourne a cikin Hyde Park a matsayin wani ɓangare na babban sake inganta Hyde Park da Kensington Gardens. A wancan lokacin, Westbourne ta samar da kududdufai na sha daya a wurin shakatawar.
A shekarun 1730s, tabkin ya cika girmansa da fasalinsa na yanzu. Mai kula da lambu Charles Bridgeman ne ya aiwatar da sake fasalin, wanda ke dauke da Westbourne don kirkirar tabkin da mutum ya kirkira, sannan kuma ya tona babban korama a tsakiyar Kensington Gardens (korama zagaye) don zama matattarar masu tafiya a cikin wurin shakatawa .
La Serpentina na ɗaya daga cikin tabkuna na mutum da aka fara kerawa don su zama na ɗabi'a kuma an kwaikwayi ta a wuraren shakatawa da lambuna a duk faɗin ƙasar. A ƙarshen arewacin akwai maɓuɓɓugan ruwa guda biyar kewaye da mutum-mutumi na gargajiya da sassaka, a hukumance ana kiran yankin da Lambunan Italiya.
Babban abin tunawa da tagulla ga Edward Jenner, wanda ya kirkiro rigakafin na zamani, ya mamaye yankin kuma asalin yana cikin dandalin Trafalgar a cikin 1858, amma bayan shekaru huɗu sai aka matsar da shi zuwa wurin da yake a yanzu.
Saboda yanayin rashin gurɓataccen yanayi, ya zama mahimmin mazauni don rayuwar namun daji kuma an sanya shi a matsayin gidan tsuntsaye. Hakanan akwai wani wurin shakatawa na rectangular a bankin kudu wanda aka bude shi a shekarar 1930. An san shi da Lido Lansbury, kuma an raba shi da sauran tabkin ta wurin buoys na kewaye. Akwai kuɗi don shiga Lido, kuma ana iya canza ɗakuna kuma ana buɗe su ne kawai lokacin bazara, yawanci 10: 00-17: 30 na yamma. Hakanan akwai jiragen ruwa don kwastomomi.