Pasig River
...that the Pasig River reverses its flow of water from Manila Bay to Laguna de Bay when there is a high tide during the dry season?
...that the <b id="mwDD0"><a href="./Pasig_River" id="mwDD4" rel="mw:WikiLink" title="Pasig River">Pasig River</a></b> reverses its flow of water from <a href="./Manila_Bay" id="mwDD8" rel="mw:WikiLink" title="Manila Bay">Manila Bay</a> to <a href="./Laguna_de_Bay" id="mwDEA" rel="mw:WikiLink" title="Laguna de Bay">Laguna de Bay</a> when there is a <a href="./Tide" id="mwDEE" rel="mw:WikiLink" title="Tide">high tide</a> during the dry season?