This is a natural freshwater pool, one of only two on Guam. There is a rope swing over this pond and it makes for a great refresher after snorkeling at Shark's Hole. This is a great hike, and the one I take visitors and tourists on frequently.

Drive out Route 10/16 to Micronesia Mall. Get onto the road to Two Lovers Point (TLP): At Marine Drive you can turn right and immediately get into the center lane for a left turn. Or, you can take a left on Marine Drive and take the first right. These roads join within a few hundred yards. Once on this road, stay straight — don't take the turn off to TLP itself. You'll pass the ruins of the Palauan cultural center and then the Northern District sewage treatment plant. Just past this plant the road hooks around to the left and goes down the cliff, past the AT&T satellite dish, coming out at the park by the power plant. Parking probably best near entrance to power plant.

The hike is about 30 minutes—a fair hike, but level. According to signs posted in 2000, it is 2.2 miles from the Park to Hilaan Beach. Come prepared to wade in the ocean around the rocks between Tanguissan and Hilaan Beaches, and if you are adventurous dress to enjoy the rope for a swing into the pond! Also, wear sunblock and a hat: on this white beach -- you get baked from above and below. Bring plenty of water.

Hilaan Beach is still one of the most pristine, picture-postcard beaches on Guam. Once you climb over the rocks at the end of Tanguissan Beach, you leave behind the trashed out picnic area and the power plant, and you’re soon out of sight of tourist-land, too. You could be on some unspoiled atoll. The sand is still soft — look for areas that are almost completely made of the remains of one-celled animals called living sand or forams (foraminifera)

The trail into Lost Pond is an excellent transect from the strand into some fine limestone forest. There are some big native (seeded) breadfruit, pandanus, mapunao (Aglaia), "umumu" (Pisonia grandis) and cycads. You will also see medicinal herbs such as tapun ayuyu (Elatostema calcareum), Guam pepper (Piper guahamense), and the bird's nest fern, Asplenium nidus. If there has been rain, you may get lucky and catch a glimpse of one of the endangered, endemic Partula snails that still hang on there.