Cobra Lair (Location)
The cobra lair in Saqqara Nome
Sight the king cobra and an unrelated treasure chest in the central part of the ruin.
There's an entrance on the north side.
The interior is, unsurprisingly, full of cobras. You might want to snipe them to death before sliding inside. Sniping the leader completes the location.
You may then retrieve the treasure, and a spiteful note, at your leisure.