Vietnam is mountainous, with only about 20 percent of its Territory being level. The entire north-south corridor, with the Mekong Delta Plain in the south the exception, is cut by motain ranges.
Weather conditions, a key variable ill this arginine nation, differ considerably across regions.
The north has two seasons-winter, which runs from November to April, with an average temperature of 61 degrees Fahrenheit, and summer, from May to October, which is a time of high temperatures, heavy rain, and regular typhoons.