A liver hemangioma usually occurs as a single abnormal collection of blood vessels that is less than about 1.5 inches (about 4 centimeters) wide. Occasionally liver hemangiomas can be larger or occur in multiples. Large hemangiomas can occur in young children but this is very rare. In most people, a liver hemangioma will never grow and never cause any signs and symptoms. But in a small number of people, a liver hemangioma will grow to cause complications and require treatment. It's not clear why this happens.
When you set out to take in the Giant redwood trees of California, pack your camera and head south to the parkâs Mariposa Grove. Conveniently located near Yosemiteâs south entrance, Mariposa Grove is home to the Grizzly Giant sequoia, a leisurely 0.8 mile walk from the main parking lot. The oldest known giant redwood trees in California are more than 3,000 years old. 2  The bark of Giant Redwood Trees can be as thick as 4 feet, and helps make them fire resistant. 3  In addition, fires actually help redwoods survive by wiping out smaller trees that would eventually take over.
Average mature trees, several hundred years old, stand from 200 to 240 feet tall and have diameters of 10 to 15 feet, and some trees have been measured at more than 360 feet. The tallest tree in the world, The Stratosphere Giant located here at Humboldt Redwoods State Park, is just over 370 feet tall.In the most favorable parts of their range, Coast Redwoods can live more than two thousand years.Redwoods are named for the color of their bark and heartwood.he tallest tree in the world, The Stratosphere Giant located here at Humboldt Redwoods State Park, is just over 370 feet tall. In the most favorable parts of their range, Coast Redwoods can live more than two thousand years. Redwoods are named for the color of their bark and heartwood.