bsheartland.esm seems to be a file related to a video game, likely a Mass Effect game, given the .esm extension which typically denotes an "Ender Saved Map" or more likely in this context, an "ESM" (Executable XML Script Module) file, commonly used in the Elder Scrolls and Fallout series but also possibly associated with other game engines.
You're looking for a helpful guide on downloading bsheartland.esm . bsheartland.esm download