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.
Shortness of breath (dyspnea) Dyspnea is sometimes described as a tightness in the chest or an inability to take a big breath. Large tumors or the spread of lung cancer can cause blockages in your major airways as well as fluid buildup around your lungs. This buildup is called a pleural effusion. Pleural effusion can lead to shortness of breath and chest pain, common symptoms of lung cancer.