Analysis of information sources in references of the Wikipedia article "Angel Island (California)" in English language version.
Early sketches of the area around Quarry Point show a substantial hill, more than one hundred feet high, on the site of the quarry. By the time the quarry operations ceased the hill was completely gone – it had been quarried away.
{{cite web}}
: CS1 maint: archived copy as title (link){{cite web}}
: CS1 maint: archived copy as title (link){{cite web}}
: CS1 maint: archived copy as title (link){{cite web}}
: CS1 maint: archived copy as title (link)