What made Pasig thrive in the olden days was the bustling commerce especially along the riverbanks. Apart from the presence of the Pasig and Marikina rivers, a number of tributaries also contributed to Pasig’s growth. One of those tributaries would be the river flowing across the town center, the one locals call the “Bitukang Manok” or “chicken’s intestines” due to the river’s wormlike shape. It was also known as the Pariancillo River, and in its heyday, the river served not only as a center for trade but also an important transport route as it served to link the town to Antipolo. Bitukang Manok would more importantly play a role in…