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.
Dyspnea is a subjective, uncomfortable awareness of one's breathing that does not necessarily correlate with appearance or with oxygen saturation measures. Ask the patient if they're feeling short of breath and then they can rate their dyspnea on a scale of 0 to 10, just as they do for pain. We should always use acceptable standard therapies to treat or reverse the underlying cause of dyspnea if possible. Imagine a woman in her 60s with advanced COPD. She already does pursed-lip breathing and often sits in front of a fan. This seems to help, but she describes constant shortness of breath at 5 out of 10, which worsens with minimal exertion.