Refers to a location previously mentioned or understood from context. Common in news reports and formal writing.
The incident occurred at the same place.
Many tourists visit that place.
A large-scale flood occurred there last month.
The press corps visited that place last week to report on the story.
He has been living there since ten years ago.
同地 refers back to a place already mentioned in the text, while 当地 means 'this place' — the location of the speaker or writer.
同地 is a formal anaphoric term pointing back to a previously named place, whereas 現地 means 'the actual site' or 'on the ground', often used for fieldwork or local conditions.
Compound of 同 (same) and 地 (place). A straightforward Sino-Japanese word.