1800 feet, that is, like, 600m? There are even cliffs that are double that height. Why not just hike up a mountain? In New Zealand or Hawaii it should be possi

1800 feet, that is, like, 600m? There are even cliffs that are double that height. Why not just hike up a mountain? In New Zealand or Hawaii it should be possible to go from sea-level to above 3000m in one push. Or take a balloon?