This depicts A TORTOISE AND A SNAIL IN  A RACE WITH AN IGLOO.

It isn’t A ROW OF IGLOOS RECEDING INTO THE DISTANCE or, as suggested by Fosbury, A ROW OF TORTOISES RECEDING INTO THE DISTANCE, much less A ROW OF SNAILS RECEDING INTO THE DISTANCE (which is what I thought until I checked my notes).

Anyway, I’m sorry there isn’t a proper prize, but you can at least claim a discount of 17%  on purchases from this web site by quoting voucher code TSRI at checkout.