Put photos in the description section of cache information

[+signseekers]

Hi I am writing up a cache description for a cache I am placing and I want to put a diagram in the cache description box as it is an Earth Cache which needs extra info. How do I insert a diagram or photo into the description box. 

Also how do I write headings in bold - I copied and pasted into the description box but my headings did not come out in bold. Is there a symbol I must use like when setting paragraphs?

 

Any help appreciated.

[+Touchstone]

Link for reference:

 

https://www.geocaching.com/help/index.php?pg=kb.chapter&id=97&pgid=59

 

Link for second portion of your question:

 

https://www.geocaching.com/help/index.php?pg=kb.chapter&id=97&pgid=79

Edited January 23, 2018 by Touchstone

[+signseekers]

brilliant. Thank you so much - really appreciate it.