The draining lava left long, tube-like caverns. Of the four caves in this particular cluster, only Boyd Cave is now open to hikers. Arnold Ice Cave is filled with ice. Skeleton and Wind Cave were open to hikers until 2007, when they were gated closed to prevent vandalism and protect hibernating bats.
On the other hand, asthma is an ongoing chronic condition that has acute flare ups and chronic pulmonary insufficiency due to airway reactions that cause the bronchial tubes to be partially obstructed. This results in shortness of breath, chronic cough, frequent chronic bronchitis, chronic pneumonia and wheezing.
Tachypnea vs Dyspnea. Dyspnea is a term that also describes breathing but refers to the sensation of shortness of breath. Dyspnea can occur with a normal breathing rate, a high breathing rate, or a low breathing rate. It can also occur with both a shallow breathing pattern or a deep breathing pattern.