Like a caterpillar retreating into its cocoon -- or a hideous alien life form withdrawing into its pod -- Extreme Travel Trivia is preparing for transformation. After the contest whose final clue appears today, ETT will disappear until autumn, gathering its energies, pondering its fate and receiving a complementary spa package, including deep-tissue body work, a program of daily colonics and a full brain smear.

When it re-emerges in the fall, it will still be Extreme Travel Trivia. You will still love it. You will still hate it. You will still be baffled by it. But trust us: You will never recognize it.

First Lady's World Tour: Week 4

Speaking of home, the first lady's final continental swing at least appears to take her south of her recently proclaimed home, to a country whose magnificent monuments testify to an ancient indigenous civilization. Famous mountains, rivers and rain forests grace this country -- and the capital city, nestled on the western coast, makes the first lady more determined than ever to ensure her future amounts to more than a hill of beans. But that is just a dream down a shining path, since, on closer inspection, she discovers -- mon dieu! -- that she really has not traveled very far and is now close to a lake named for an explorer, a lake that figures prominently in American wars goneby. Inspired, the first lady again girds herself for battle, ready to take on all comers.

So what's the name of the place the first lady is in?

This four-week contest began July 25; to win, send in your answers to Weeks 1 through 4. The deadline for entries, which should consist of all four answers in the "First Lady's World Tour" contest, is midnight, Aug. 21. Partial entries will be disqualified. Send entries by e-mail (travel@washpost.com; put the words "Extreme Trivia" in the subject field); U.S. mail (Washington Post Travel section, Extreme Trivia, 1150 15th St. NW, Washington, D.C. 20071); or fax (202-334-1069). Winners will be selected at random from among all correct entries. One entry per person per contest. Employees of The Washington Post are ineligible to win prizes. Entries become property of The Washington Post, which may edit, publish, distribute and republish the information in any form, including paper and electronic media. All published clues and contest rules are available on the Travel section's Web page; go to http://www.washingtonpost.com and choose Travel from the column on the left. Or write us at the address above for a complete copy of the rules.