They once ruled Southern California, staking claim to broad stretches of coastline and hillsides. Then, in the 1980s, they began vanishing -- driven from their native habitat by tract houses, mini-malls and pesky environmentalists.
By the time gasoline prices barreled into the stratosphere this year, local oil wells had become the industrial equivalent of an endangered species.
From a peak population of 33,000, they dwindled to about 4,000. Surviving drills were forced to forage in strange locations, such as restaurant parking lots, residential lawns and inside faux office buildings.
Today, these holdout rigs stand as a symbol of both a bygone era and -- oddly -- the future.
Because of technological breakthroughs and rising demand for petroleum, the previously doomed hulks have gained a new lease on life. And abandoned wells are being pressed back into service.
If crude prices spiral high enough, "it might get to the point where people start tearing down houses to drill for oil," said Rich Baker, who oversees the Southern California branch of the state Division of Oil, Gas and Geothermal Resources. "It's happened before
In recent months, "we've had companies putting 45-year-old wells back into production," said Rock Zierman, spokesman for the California Independent Petroleum Assn.
Iraj Ershagi, director of USC's petroleum engineering program, predicts that the number of abandoned wells -- about 3,000 statewide -- might soon drop to zero.
But he said people probably wouldn't notice the resurgence of drilling. Since 1943, when Shell Oil pioneered the first "noiseless" derrick -- swaddled in fluffy insulation -- oil pumps have grown increasingly adaptable to urban settings.
In Signal Hill, grasshopper-style rigs drill for oil behind backyards, next to a Starbucks, in public parks and on the edge of a cemetery.
At Huntington Beach City Hall, three drills lurk in the parking lot. Like giant mechanical mosquitoes, they spend their days slurping up syrupy crude from beneath the earth's skin.
Some wells try to blend in with their surroundings. In the waters off Long Beach, rigs have disguised themselves as tropical islands with 45-foot waterfalls, banana trees, hibiscus and carved tikis. At night, the illuminated oases look like "giant orange, lemon and blue Popsicles looming out of the sea," one writer said.