These classic stories — featuring the Fourth and Third Doctor respectively – are set for release later this year as part of a box set which also includes The Horns of Nimon. No preview image for that DVD has been made available as yet.
The Time Monster is a Third Doctor story starring Jon Pertwee, Katy Manning as Jo Grant and Roger Delgado as the Master, and sees the Time Lords locking horns in the past in Atlantis.
Underworld meanwhile stars Tom Baker as the Doctor and Louise Jameson as Leela and features many elements drawn from Greek mythology, such as Jason and the Argonauts.
The Horns of Nimon finally stars Tom Baker with Lalla Ward as Romana and again features ancient Greek themes and ideas.
Set for release on March 29th, 2010 the Myths and Legends box set has no cleared cover as yet, but is available for pre-order from Amazon for just Â£33.48!
(Edit – links at the top are now fixed!)