Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good, with some flaws

Bought this product to go along with my son's Thomas wooden railway set.PROS: Realistic and durable. Versatile - top piece can be removed and mountain still looks good.CONS: Although the top tunnel has enough clearance, the bottom tunnel has low clearance. If the mountain is placed over wooden track, some Thomas trains (Thomas, Annie, Clarabel) will pass through, but some others will get stuck. The generic wooden tracks the come with the set do not have the exact same measurements as Thomas track. The staight and curved pieces are slightly longer. The ascending piece is about 1/2 inch longer and 3/8 inch shorter than the Thomas equivalent. This may not affect the overall layout but the connections aren't as smooth. The ascending Thomas track actually works perfectly here.Overall, it looks good but ended up not using the bottom tunnel. It's reasonably priced compared to other Thomas accessories.