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.
Both. and COPD, or. obstructive pulmonary disease, involve blocked airways. The difference between the two is that the blocked airways of asthma typically open up completely with medication, while the airways with COPD may be partially opened with medication.ther differences between the two include: 1  Asthma attacks come and go. 2  The COPD cough usually (but not always) results in mucus production and may or may not involve wheezing. 3  COPD flare-ups, called exacerbations, are a severe worsening of symptoms. 4  or viruses or other exposures.