The next most commonly asked question with regards to the Costco wheel alignment cost is, âHow often must wheel alignment be performed?â Most tire stores recommend that this service be performed whenever new tires are fitted and/or every 3,000 to 5,000 miles thereafter.
cave in. 1  1. Fall in, collapse, as in The earthquake made the walls cave in. 2  2. Give in, admit defeat, as in The prosecutor's questions soon made the witness cave in. 3  3. Collapse, faint, or die from exhaustion, as in After a twenty-mile hike I caved in.
These can be enlarged by wave action, eventually forming a cave. This cave is found on the coast of California, USA. If a cave is formed in an exposed headland, it may be enlarged until it runs right through this headland. The resulting feature is called an arch. Natural arches can be seen in the photos below.