This tomb, in Hadhramaut, Yemen belongs to Hud (upon him be peace) who was sent as a Prophet to the people of ‘Aad. The people of ‘Aad were known uniquely for their mighty strength and size. The majority however, rejected the invitation of Hud (upon him be peace) and were destroyed by a powerful wind. The eleventh Surah of the Holy Quran is named after Hud (upon him be peace).
Reference: Stories of the Prophets – Ibn Kathir
Note that this entry has been shown for information purposes only. On no account should anybody pray towards a grave or seek supplication through them as this is tantamount to committing shirk, associating partners with Allah (Glorified and Exalted is He).