Quicksand and mist. Travellers Palm overprint

A good pair. Looks like one is sinking into quicksand and the other is disappearing into a mist. Under printed due to lack of  ink.
The Travellers' Palm or Travellers' Tree originated from Madagascar and was previously thought to belong to the banana family. It is so called because the fan tend to grow in a east-west line, thus providing a crude compass. It grows to an average height of 7 metres.