tank cascade system
... that Sri Lanka's ancient tank cascade system of irrigation reservoirs creates habitats for the island's elephants ?
... that Sri Lanka's ancient <b id="mwA5g"><a href="./Tank_cascade_system" id="mwA5k" rel="mw:WikiLink" title="Tank cascade system">tank cascade system</a></b> of irrigation reservoirs creates habitats for <a href="./Sri_Lankan_elephant" id="mwA5o" rel="mw:WikiLink" title="Sri Lankan elephant">the island's elephants</a> <i id="mwA5s">(examples pictured)</i><span about="#mwt62" data-mw='{"parts":[{"template":{"target":{"wt":"-?","href":"./Template:-%3F"},"params":{},"i":0}}]}' id="mwA5w" style="padding-left:0.15em;" typeof="mw:Transclusion"><span typeof="mw:Entity">?</span></span>