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.
Asthma and COPD: Differences and Similarities. You can't breathe when you exert yourself, and you suffer from episodes of coughing. There are two likely causes for this: you could have asthma, or you could have Chronic Obstructive Pulmonary Disease (COPD), such as emphysema or chronic bronchitis. Because asthma and COPD have a number of similarities, it can be difficult to distinguish between them.