The park lies between the departments of Paraguarí, Central, and Ñeembucú, covering portions of the districts of Caapucú, Villa Oliva, San Roque González de Santa Cruz, and Quiíndy.

Evidence of this can be found on the eastern side of the lake, where lines of mollusk shell middens, predominantly from the species Ampullaria and Diplodon, as well as campfire sites made by former inhabitants, are present.

The vegetation in this area is closely related to the eco-region of Ñeembucú, where species such as espinillo, palo negro, ingá, lapacho, and yvyra ovi can be found, along with pacurí and al yuasy-iy.

The park's fauna is diverse, with species such as toucans, ñandú, suruku'a, inambú, mbiguá, chahá, taguatí, caburé, capybara, rabbits, monkeys, guazutí, stags, agurá, crocodiles, teja, and various snakes.

The park has been designated an Important Bird Area (IBA) by BirdLife International due to its support for significant populations of strange-tailed tyrants, ochre-breasted pipits, and chestnut seedeaters.