Crevasses often have vertical or near-vertical walls, which can then melt and create seracs, arches, and other ice formations. These walls sometimes expose layers that represent the glacier's stratigraphy. Crevasse size often depends upon the amount of liquid water present in the glacier. A crevasse may be as deep as 45 metres, as wide as 20 metres, and up to several hundred metres long.
When in outdoor public spaces where you are legally present, you have the right to capture any image that is in plain view (see note below about sound recording). That includes pictures and videos of federal buildings, transportation facilities (including airports), and police officers.
Public records are in fact a wide variety of records that are being kept by the government and are open to the public under the freedom of information act. They include marriage records, divorce records, court records, birth records, death records and many more. In Cameron Park, CA records are kept mostly on physical files. There is a great rise in the use of electronic copies that are available on the internet. You are advised to look into entries of each record to find out more information on how to obtain them.