Beneath layers of chipping gray paint, however, is a nearly forgotten piece of the human story - one of longing, disappointment, fear and rage, etched as poems into the decaying wood panels by immigrants held for weeks or months during enforcement of Chinese exclusionary laws.

''I'm heartsick when I see my reflection, my handkerchief is soaked in tears,'' reads one poem carved in Chinese characters on a first-floor wall. ''I ask you, what crime did I commit to deserve this?''

This and dozens of other poems have been the focus of a $50 million, three-phase state parks restoration project underway at the Angel Island Immigration Station on the 470-acre island in San Francisco Bay. A mix of federal, state and private money is funding the project.

Before work began in August, a team of scholars combed the station's barracks and hospital, locating every visible piece of writing on the walls. It's the first-ever attempt at creating such a record, and scholars are using it to find out more about the life of detainees.

Until now, the most comprehensive account was the 1980 book Island, which published more than 100 Angel Island poems, said Charles Egan, a Chinese Studies professor at San Francisco State University and a lead scholar on the new project. But the collection, based on 1930s-era manuscripts by two detainees who reportedly copied poems off the walls, never was physically corroborated.

The project located most of those poems and found about 60 new ones.

Meanwhile, park contractors are busy restoring the station to the way it looked in the days when it was known as the Ellis Island of the West, the main gateway for immigrants crossing the Pacific. From 1910 until fire destroyed part of the station in 1940, it processed about 1 million immigrants, including 175,000 Chinese.

But unlike Ellis Island, where most immigrants only stayed several hours, Angel Island held Chinese immigrants for an average of two or three weeks, some for nearly two years, as officials verified their immigration status.

Under the Chinese Exclusion Act of 1882, laborers were not allowed to enter the United States. The law, the first one in U.S. history that targeted a specific ethnic group, was enacted in response to complaints about the influx of Chinese laborers, who had come to work on the railroads.

Exceptions to the law, later repealed in 1943, were made for wives and children of American citizens, merchants, students, diplomats and tourists.

Historical accounts of life at the station showed great disparity between treatment of Asian and non-Asian immigrants, who were held in separate quarters. Asian detainees, housed in sections of the two-story barracks building that were meant to accommodate 100 but often held 500, were given substandard food, saltwater showers and limited recreation behind barbed-wire fences.

Views from triple-stacked bunks only hinted at the lush greenery and deep blue ocean just outside their confines. Detainees were kept on the north side of Angel Island, faced away from the bustling city that promised them so much opportunity.

Languishing from indefinite stays, prisonlike quarters and grueling interrogations, many Chinese turned to poetry to vent.

''Poetry is much more central to Chinese culture than it might be to others,'' Egan said. ''Poetry was seen as a natural product of emotional experience, so there was always a premium placed on expressing yourself, especially in a time of high emotion.''

Homer Lee, who was 16 when he arrived at Angel Island in 1926, remembered seeing groups of older men - many of them schoolteachers - huddled together to discuss and display their poetry on the walls during his six-month detainment.

''They tell the truth of their lives and the future of their lives on the wall,'' said the 95-year-old, who now lives in Berkeley and revisited the island last year.

Historian Judy Yung, a co-author of Island who conducted oral histories of former detainees, said researchers have been unable to locate any of the poets. Unlike writings by detainees of other nationalities, most of the Chinese work was unsigned.

''There was a sense of secrecy and shame to what happened at Angel Island,'' Yung said. ''It doesn't matter who wrote them, but that the poems speak certain truths and speak certain feelings that we all understand.''

Dismissed as graffiti by guards and officials at the time, the writings frequently were painted over, which obscured the writings for decades until a park ranger rediscovered them in the 1970s.

The station will reopen to the public late next year after completion of the first phase of restoration, featuring a new exhibit with the scholars' findings.