Answer:
yes you can safely delete
Explanation:
The LOST.DIR is a system folder. Its a place where the Android OS places files that were recovered during a system boot up (ie when you turn on your phone). It is analogous to the 'Recycle Bin' under Windows OS. The files which are stored inside this directory are often recoverable. Most of the times you won't find anything at all in LOST.DIR directory.
