A visit to Civil War sites brings the era to life. BY SUSAN R POLLACK etersburg, VA — We're standing on the edge of a large, grassy crater, trying to imagine the carnage that took place here nearly 137 years ago. A soft summer breeze ripples across the battlefield, which is quiet now, eerily quiet, save for an occasional creaky tree branch and the voice of Grant Gates, a National Park Service interpreter, bringing Civil War history to life. Eyes wide, our family listens as he recounts the Battle of the Crater, where Union soldiers, in a daring but ill-fated gambit, secretly dug a 511- foot tunnel 'under Confederate lines and packed it with four tons of black gunpowder. Then, on a moonless July night in 1864, nervous volunteers lit the 15-minute fuse not once, but, incredibly, twice when nothing hap- pened the first heart-pounding time. "It was as if the sky was just raining dirt for several minutes," Grant says of ri the massive, near-dawn explosion that sent hundreds of sleeping Rebel sol- diers airborne and produced the gap- ing hole (originally measuring 170 feet long, 60 feet wide and 30 feet deep) before us. The chaotic battle that ensued, with fierce, hand-to-hand combat, left twice as many Union casualties — 4,000 compared to 2,000 Confederate. It also failed to secure a break-through to Petersburg and prompted Gen. Ulysses S. Grant call it "the saddest affair' I have ever witnessed in the war." Standing on this hallowed, central Virginia ground, the last major battlefield of the Civil War, . I feel chills run up and down my spine. Our two children, ages 8 and 10, seem equally enthralled on this vaca- tion that's a dramatic departure from the no- brainer, sun-, sand- and surf-getaways typi- cal of many family trips. In a state rich with Civil War attractions, we've planned our three- day itinerary carefully to avoid battle- field burnout, spending a day at Paramount's Kings Dominion theme park in Doswell, north of Richmond, and staying each night in motels with pools. "I • could almost see the ghosts in the distance over there," Justin, the 10-year-old, says, pointing through the trees in another section of Petersburg National Battlefield, as we inspect the Union mortar known as "Dictator." We're awed by the imposing black weapon that hurled 225-pound shells almost daily into the heart of Petersburg, two miles away, during the city's grim, 10-month siege in 1864- 65. Leaning her face up against the powerfiil cannon, 8-year-old Jenny says, "I want to see if it's bigger than my head!" and Justin later confides, "I gasped when I saw it." We learn more about the city's terri- ble, 292-day siege, the longest in Above: A costumed re-enactor demonstrates Civil War weaponry and brings history to life at Pamplin Historical Park. Left: Bronze soldiers greet visitors near the entrance to Pamplin Historical Park and the National Museum of the Civil War Soldier.